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PLM Manual - Lab.gruppen

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1. Must be groundedieerthed Made in Sweden Figure 4 2 Back Panel Layout Options for a 4 channel PLM Ir prim afr sec T L I1 weurri uma m LABGRUPPEN S S 00 SW MON 50 60Hz p BEE C D D D L_a WITH Iso FLoar m PAUSE anon AES EBU 10 100 Base TX lake o m e Ser N o Removed e Must be e groundedienrthed e CA wine or CH 2v Figure 4 3 Back Panel Layout Options for a 2 channel PLM LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 11 Product Overview 4 21 Input and Link Connectors Analog Inputs Analog inputs are available on two standard XLR3F latching connectors The inputs are electronically balanced and feature Lake so Float circuitry The impedance is 20 kohms and the inputs can accept a maximum input level of 26 dBu Analog Links Two latching XLR3M connectors are fitted adjacent to the analog input connectors These are par
2. 1 29 Additional ocurnebteti n ue eter uec desunt bord une dra etd tread 3 4 4 CMM ee Em 4 9 9 tenete tet irati testi te et ee ee eee eee 6 JA Operating feet 6 S 1 m 7 4 Product OVerview ier Gad leet ee nio ER Sbeccissitsecuesssiesseecassseseesssddscedeacadseesdeessdsbbeceasssebeceicasiey 8 Front Panel Overview sssssssssssssseeee emen ennemi enne nennen enne rennen enne nnne enne aree enne nens 8 42 Back Panel OVSrVIeW eruta RUM Rd ene 11 5 Operation and Performance 5 crecer senec ria nrc raa RE cro RE CE xa 15 54 Operation PrecaultlOfis uctor eme ties eere d ba ewe e bu 15 5 2 Power Qutput PertortrialiGO un tx 15 5 3 Amplifier and Load Protection Systems sssssssssssssssseeeneeee emen eene 17 So veu 24 6 Signal Flow and Lake Processing eeesseeeeee eene eene nennen nnn nennen 25 oI end TTE 25 6 2 Level Adjustments amp Mute enne nre enne 25 6 3
3. esta esten toad 95 11 Technical Specifications iei eer Eco EER E AEEA 97 12 Warranty and Support REESE EX E ESEIA ERU RR RUE CN RR EE ANNEE 98 REEE TEE 98 12 2 International VVarrantles e ert petat ee a qun bea tdi eaa quad 98 12 3 Technical Assistance and Service sssssssssssssseeemeneeeeen eene eene nre een re eene 98 TESOOIKS cueste tnim eite er d 99 LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 Welcome 2 Welcome 2 1 Introduction Thank you for choosing the Lab gruppen PLM Series of Powered Loudspeaker Management systems for your sound reinforcement needs We are confident that you will be pleased with the performance unique features configuration flexibility reliability and long term durability offered by this product For fast installation and use of this product your welcome package includes a printed copy of the PLM Series Ouick Start amp Field Reference Guide which contains the information required to safely install the product and place it in service Control and editing features are accessible via the front panel interface or via the included Lake Controller software It is recommend that the Quick Start amp Field Reference Guide and all product documentation on the included CD ROM is reviewed to ensure familiarity
4. adig 63 8 2 Analog Inputs and OUtDUtS eee eene eene enne nre eene teen nnne 68 98 3 SALES DIGI CAO ie tcc E respeta LER bna dest 70 8 4 RJ45 etherCON Network Connections ssssssssssseeeeeeee ener nennen nennen nter 71 MM omni LH 72 ADDODODG 73 9 1 Faults and Warnings Overview rennen rne nennen 73 PME Ecce 77 9 3 Factory Default Settings EAE qure ipei gue ctt 77 9 4 Current Draw and Thermal Dissipation 5 eene 78 9 5 Glossary of Terms Acronyms and Abbreviations sssssssssssseeeeee ene eene 82 JOE UIDI M 85 RACK I O PAN lS st 85 2 POWST dendi editus 85 10 3 RTTRTT 86 104 Gain Level OptlmmilzatiOni coat e a p educ led om be pL ERR PR aS 88 10 5 Speaker Configurations ssssssssssseseee eene rennen eren een nnne eene rne nennen een nnns 91 10 6 Digital Audio doe pret xe ex te Dude det bres et es 92 10 7 Digital Glock gt
5. 200000 NEED SERVICE 2 Frame fault Need Servi Service required contact your dealer 200000 NEED S Frame fault Need Servi Service required contact your dealer 200000 NEED SERVICE 4 Frame fault Need Servi Service required contact your dealer 200000 NEED SERVICE 5 Frame fault Need Servi Service required contact your dealer 200000 200000 NEED SERVICE 6 NEED SERVICE 7 Need Servi Need Servi Frame fault Frame fault Service required contact your dealer ice required contact your dealer 200000 NEED SERVICE 8 NO INPUT OINI oD Frame fault Need Service No Input Source ice required contact your dealer The chosen input type has been deselected or lost and the input type selector has no alternative input sources in the priority list 14 OFFLINE Channel Fault No Load Detected Frame Offline PLM Series Operation Manual Rev 1 3 0 Warning No load detected at the power output channel The Lake Controller cannot communicate with this Lake device LAB GRUPPEN Displayed Text Event Log Text Category Appendix Description OVER SPKR CNT Over Speaker Count Warning A lower load impedance has been measured than was predicted by the Load Library for the assigned speaker type 100000 14000 PAL ACTIVE Total amplifier power being delivered
6. Input Router 1 Selected input type input gain level relative to clip router fault warning clip e Input Router 2 Selected input type input gain level relative to clip router fault warning clip This section displays confirmation of the following settings LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 45 Front Panel Interface 2 AES3 Terminated Icon no icon AES Unterminated so Float Grounded Icon no icon Iso Float Floating Dante Clock Master Icon no icon Dante Slave or Dante Disabled O Unused in Input View Module A Input Mixer Input 1 2 Connection Status Module A input level meter Module B Input Mixer Input 1 2 Connection Status Module A input level meter Combined channel status summarizing faults and warnings for all power outputs 7 11 Menu Mode 7111 Overview The majority of functions can be accessed via Menu Mode on the front panel These functions include the adjustment of gain delay limiters input and output routing and the ability to recall Frame Presets Menu Mode can be accessed at any time by pressing the MENU button After pressing the MENU button various submenu options are displayed as shown in Figure 7 9 Menu Frame MUTE 4 Module Frame Prst ENABLE METER Input Cfg Load Mon Attenuation Dante Figure 7 9 Menu Mode Main Menu Press the illuminated button adjacent to the required option to display an associated submenu When parameter level
7. 1 Front Panel Interface An overview of the front panel interface is provided in section 4 1 This chapter describes each cluster of controls as shown in Figure 7 1 LAB GRUPPEN Figure 7 1 Front Panel Interface 71 Overview The front panel interface is framed by two sturdy cast aluminium handles and metal grill protecting the air intake and dust filters The majority of PLM functions can be controlled and or monitored via the front panel LCD display screen power button function buttons 9 and rotary encoder 7 1 1 Operating Modes The front panel has two basic modes Meter Mode and Menu Mode gt Meter Mode provides the following views Home View default Module View Temperature View and Input View To navigate through these views press the METER button Please refer to section for further information on Meter Mode gt Menu Mode provides various menus for viewing and editing parameters and is selected by pressing the MENU button Select the required submenu by pressing the associated button Please refer to section 7 11 for further information on Menu Mode 71 2 Warning Fault and Mute Indications Fault or warning conditions are indicated via the LEDs embedded in the dynamic function buttons a simul taneous description is shown adjacent to the button on the LCD The LEDs to the left of the LCD indicate problems with the PLM or its inputs while those to the right indicate problems wi
8. 22 The US National Differences clause 16 3 requires that network cables must be flame rated VW 1 LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 Important Safety Instructions 1 WARNING To reduce risk of fire or electric shock do not expose this apparatus to rain or moisture Pour r duire les risques de blessure ou le choc lectrique n exposez pas l appareil la pluie ou l humidit Do not expose this system apparatus to dripping or splashing and ensure that no objects filled with liquids such as vases are placed on the apparatus L appareil ne doit pas tre expos des egouttements d eau ou des claboussures et de plus qu aucun objet rempli de liquide tel que des vases ne doit pas tre plac sur l appareil This apparatus must be connected to a mains socket outlet with a protective earthing connection Cet appareil doi t tre raccord une prise de courant qui est branch e la terre The mains plug is used as a disconnect device and shall remain readily operable Lorsque la prise du r seau d alimentation est utilis s comme dispositif de d connexion ce dispositif doit demeur ais ment accessible 15 CAUTION To reduce the risk of fire or electric shock do not remove screws No user serviceable parts inside Refer servicing to qualified service personnel Pour r duire le risque d incendie ou de choc lectrique ne pas retirer les vis Aucune pi ce r parable par l utilisateur Confie
9. Legacy Lake Device This term refers to older Lake audio equipment which may form part of an audio system i e Lake Contour Pro 26 Lake Mesa Quad EQ and the Dolby Lake Processor The Lake Controller has the capability to control all Lake legacy products LimiterMax Line Driver LimiterMax is the name given to Lake s proprietary package of dynamics control which forms part of the Lake Processing system An analog audio amplifier usually with zero gain having very low output impedance and high drive capability They are used for transmitting balanced analog audio over very long cables Linear Phase Crossover See FIR Filters Load Library The Lake Controller includes LoadLibrary a set of Module files specific to the PLM Series These Modules include a database of the electrical characteristics of various popular loudspeakers in addition to the standard Module data The PLM uses the load data when verifying and monitoring amplifier loads See Fingerprint LoadSmart and SpeakerSafe Load equal unequal The PLM draws different current levels from the AC supply and thus has different power ratings according to whether all channels of the amplifier are driving into the same load impedance or if there are different impedances on different channels LoadSmart is a load verification procedure within the PLM which allows the operator to confirm that each PLM output has the correct LoadSmart quantity
10. PSU Needs Service 3 Frame NEED SERVICE 3 Frame Fault Need Servi 200000 PSU Needs Service 4 Frame NEED SERVICE 4 Frame Fault Need Servi 200000 PSU Needs Service 5 Frame NEED SERVICE 5 Frame Fault Need Servi 200000 PSU Needs Service 6 Frame NEED SERVICE 6 Frame Fault Need Servi 200000 200000 PSU Needs Service 7 U Needs Service 8 Frame NEED SERVICE 7 NEED SERVICE 8 Frame Fault Need Servi Frame Fault Need Servi 200000 U Rail Protect Short Circuit Protection Chann el PSU POWER PROT SHORT CIRCUIT Frame Fault PSU Power Protect Channel Fault Short Circuit Protection Speaker Magnet Temp Fault Chann el TEMP FLT MAG Temp Fault Speaker Magnet Speaker VC Temp Fault el TEMP FLT VC Temp Fault Speaker Voice Coil Protection Chann el VHF FAULT Channel Fault Very High Frequency Voltage Protection Limiter Chann el VOLTAGE CLIP n a Wrong Type of Speaker Chann el WRONG LOAD Table 7 3 Fault Conditions Red LED LASB GRUPPEN Load Type Routing Mismatch PLM Series Operation Manual Rev 1 3 0 41 Front Panel Interface 7 10 Meter Mode 7 10 1 Home View The default view when powering on the device is Meter Mode gt Home View as shown in Figure 7 4 Low THI 00 VOLTAGE CLIP MODULE HI I
11. 26 dBu Dante Disabled AES3 Terminated Iso Float Enabled Router 1 AES1 Ch 1 as Priority 1 Router 2 AES1 Ch 2 as Priority 1 Router 3 AES2 Ch 3 as Priority 1 Router 4 AES2 Ch 4 as Priority 1 Router 5 AES Ch 1 as Priority 1 Router 6 AES2 Ch 1 as Priority 1 Router 7 AES2 Ch 1 as Priority 1 Router 8 AES2 Ch 1 as Priority 1 9 3 3 Amplifier Defaults Attenuation 0 dB Polarity Positive In phase Mutes Unmuted Load Model No Load Model Breaker Emulation Limiter 32 A Breaker Fast PLM 200000 only Analog 1 as Priority 4 Analog 2 as Priority 4 Analog 1 as Priority 4 Analog 2 as Priority 4 Analog 1 as Priority 4 Analog 2 as Priority 4 Analog 3 as Priority 4 Analog 4 as Priority 4 9 4 Current Draw and Thermal Dissipation Specifications The tables in this section provide measured current consumption and calculated heat dissipation for five different operating conditions for each PLM Series device 1 Standby Mode 2 Power On Idle No Signal 3 Power On Normal Operation Pink Noise 1 8 of Rated Power 4 Power On Heavy Duty Operation Pink Noise Max Power Not available for PLM 200000 5 Power On Pilot Tone Operation 20 kHz Sine Wave 18 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Appendix PLM 200000 Level Load Rated power Line current A Power factor Measured Power W Thermal Dissipation Dissipated BTU hr kCal hr Mains voltage 100
12. 7 11 1 2 Menu Structure Overview From the Main Menu the following submenus are available as shown in Figure 7 9 and described in the following sections gt MODULE See section 7 11 2 gt Gain gt Delay gt Polarity gt Amp Gain gt Limiters gt Mute gt INPUT CONFIGURATION See section 7 11 3 gt Router 1 gt Router 2 gt AES Termination gt so Float gt ATTENUATION See section 7 11 4 LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 4 Front Panel Interface gt FRAME See section 7 11 5 gt Frame Information gt Frame Reset gt Network gt Latency Match gt Front Panel gt FRAME PRESETS See section 7 11 7 gt Preset Recall gt LOAD MONITOR See section 7 11 8 gt Configure No of Cabinets in Parallel gt LoadSmart Verification gt Estimated No of Cabinets gt DANTE See section 7 11 9 For simplicity the following sections refer to the z buttons by their associated name on the LCD screen E g Press GAIN equates to Press the Died button adjacent to the Gain label on the LCD 7 11 2 Module Submenu MENU MODULE After selecting the Module Menu the screen shown in Figure 7 10 is displayed Press the illuminated button adjacent to the required option to view or edit the associated parameters Menu Module Ann f Amp Gain MUTE Limiters ENABLE METER Delay Polarity Mute Figure 7 10 Module Submenu 48 PLM Series
13. Channels 1 amp 2 Figure 8 3 speakON NL4 Configurations for 2 channel PLMs incl Bridge Mode 64 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN 8 1 2 2 4 Channel PLM speakON Connections Back Panel Interface On 4 channel models the power outputs are simultaneously available on a single 8 pole speakON connec tor and on two 4 pole speakON connectors The two 4 pole connectors carry the outputs of channels 1 amp 2 and 3 amp 4 respectively e 6 Figure 8 4 speakON Connections for 4 channel PLMs NL4 1 Ch NL4 2 Ch 1 amp 2 3 amp 4 eso es cr ENEMY 1 2 3 4 Table 8 2 speakON wiring and pinouts for 4 channel PLMs NL4 1 Ch NL4 2 Ch 1 amp 2 1 4 3 amp 4 chops SEITE hp NN 1 2 3 3 4 Table 8 3 speakON wiring and pinouts for 4 channel PLMs Bridge Mode LASB GRUPPEN PLM Series Operation Manual Rev 1 3 0 65 Back Panel Interface 2 PLM Output PLM Output Channels 1 amp 2 Channels 3 amp 4 NL8 PLM Output Channels 1 4 Figure 8 5 speakON NL4 NL8 Configuration for 4 channel PLMs NL4 NL8 NL4 PLM Output PLM Output PLM Output Channels 1 amp 2 Channels 1 4 Channels 3 amp 4 Figure 8 6 speakON NL4 NL8 Configuration for 4 channel PLMs Bridge Mode 83 3 Binding Post Connectors Binding post versions of the PLM are fitted wit
14. LED in the right hand soft function buttons showing steady red The adjacent fault message will show SHORT CIRCUIT It is also reported as a fault via the control network to the Lake Controller software The presence of a short circuit or low impedance is re tested every six seconds and the output remains muted until the fault clears 5 4 Power Supply The R SMPS Regulated Switch Mode Power Supply is designed to keep supply voltage rails at optimum levels even when the mains voltage drops Mains voltages can drop as much as 2096 below nominal before there is any effect on rail voltages Thus the R SMPS can deliver full rail voltage to the output stage at all times allowing the PLM to exhibit consistent transient response and a clean LF response The PLM 200000 is also equipped with a universal power supply with power factor correction PFC The device can take any mains voltage from 65 V to 265 V allowing it to function worldwide in many different configurations The PFC reduces current peaks on the lines and reduces the requirements placed on the mains distribution system The PLM 200000 has an unparalleled power factor extremely close to one 5 4 1 Low Inrush Current High power amplifiers with inadequate inrush current limiting can draw considerable current from the mains at turn on sometimes tripping a fast acting mains breaker The PLM however has very low inrush current the capacitors charge slowly and in a controlled manner to
15. The Inter Sample Voltage Peak Limiter ISVPL tailors each power output to the characteristics of the connected load Please refer to section 5 3 1 for further information 2 2 2 3 Load Verification amp Performance Monitoring A comprehensive set of proprietary DSP based tools are provided for load verification and real time perfor mance monitoring These functions utilize LoadLibrary a comprehensive database for each loudspeaker component of the connected load usually one or more band limited drivers in a multi way system Using this data and a brief test signal LoadSmart compares actual response to predicted response identify ing any malfunctioning components or connection errors During the performance SpeakerSafe monitors real time load status including temperatures of the PLM amplifier stages as well as magnets and voice coils of connected loudspeakers This allows operators to avoid power compression and identify potential problems Please refer to the Lake Controller Operation Manual for detailed information on PLM Series load verification and real time performance monitoring functionality 2 2 3 Lake Processing and Controller PLM Series devices integrate seamlessly into the Lake Processing environment and are accessible via the Lake Controller software Processing modules offer precise settings for gain delay crossover settings equalization and limiting Lake processing features incorporated in each module include Raised C
16. The high intensity white LED illuminates white to indicate that the Module Frame is selected in the Lake Controller it flashes white to indicate communication with the Lake Controller The brightness of the LCD and communications LED can be adjusted in the Frame page of the Main Menu on the front panel Rotary Encoder The rotary encoder is used to modify various parameters e g input level via the menu When a menu item is selected that permits adjustment of parameter values the ring around the rotary encoder illuminates In Home View the encoder can be used to scroll through the Meter Views Q Exit The EXIT button is used primarily while navigating the menu system in Menu Mode pressing EXIT will return the menu up one level In Meter Mode pressing EXIT returns the metering display to the default Home View 10 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Product Overview 4 2 Back Panel Overview LAB GRUPPEN PLM 100 240V 2400 2950W 50 601 SPEAKER PUTPUTS CH1 0 D Eg CE SWITCHED 10 100 Base TX
17. 9 3 PLM 14000 Current Draw and Thermal Dissipation 80 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Rated power PLM 100000 Line Current 2 Watt 1 Appendix Thermal Dissipation 120 VAC 230 VAC Out Dissipated BTU hr kCal hr Standby 4 8 16 Powered on idling 145 496 Pink noise 1 8 rated power 16 0 Ch 80 Ch 40 Ch 2 67 Q Ch 20 Ch Pink noise max power 3 16 0 Ch 80 Ch 40 Ch DICA 20 Ch 20 kHz Surveillance tone 16 0 Ch 16 0 Ch Mains connector 230 V CE version 230 V ETL version 15 V ETL version 32 A Neutrik PowerCon Twist lock 1 The power output section s PSU operates as a non resistive load so the calculation Volts x Amps Watts would not be correct Instead measured and specified here is what is known as the Active Power of the power output section providing useful real world values of power consumption and heat dissipation 2 Current draw figures measured at 230 V 115 V figures are converted from 230 V figures Figures measured at maximum sustainable power without tripping the mains breaker Listed separately for 30 A 115 V and 16 A 230 V operation Note that the max power condition is very extreme and will not occur during normal operation Also note that the mains breaker will not be trippe
18. Dante Slaves being overridden by the Dante Clock The front panel Input View indicates if that device is selected as Dante Clock Master Confirmation of Dante Master Slave status is also displayed in the Lake Controller For further information on Digital Clock configura 24 tion and the Lake Controller user interface please refer to the Lake Controller Operation Manual 96 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Technical Specifications 11 Technical Specifications Model Number of input channels Number of output channels Peak total output all channels driven Max Peak output voltage per channel Max output current per channel Max Output Power 16 ohms per ch all chs driven 8 ohms per ch all ch s driven 4 ohms per ch all ch s driven 2 ohms per ch all ch s driven All channels driven into optimal impedance interval 8 ohms bridged per ch 4 ohms bridged per ch Bridged into optimal impedance interval Audio Performance THD N 20 Hz 20 kHz for 1 W THD at 1 kHz and 1 dB below clipping Dynamic range with digital inputs for all supported sample rates Dynamic range with analog inputs Frequency response 1 W into 8 ohms 20 Hz 20 kHz Common Mode Rejection CMR Internal sample rate Internal data path Product propagation delay best case 96 kHz AES Product propagation delay analog input Sample Rate Converters THD Noise Analog to Digital inputs Inp
19. Input Stage If the signal level at this point exceeds 25 dBu a clip indication is displayed Input clipping is indicated the affected Module LED flashing red and INPUT CLIP displayed on the LCD If a subsequent input clip within 400 ms is detected the LED remain lit for a longer period Output Clip All output channels are monitored by a suite of protection circuits that include a Current Peak Limiter CPL and an Inter Sample Voltage Peak Limiter ISVPL Please refer to section 5 3 for further information 38 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Front Panel Interface If CPL protection is active or a voltage clip occurs then the associated Power Output Channel LED will flash red and a text warning will also be displayed on the screen 7 8 5 2 Warning or Fault Indications If certain parameters within the PLM approach or exceed preset limits a warning condition or fault condition may arise One or more LEDs provide a visual indication of the problem along with an on screen description of the condition displayed adjacent to the LED s gt Agreen LED confirms inputs or outputs are unmuted and operating normally gt yellow LED signifies a warning are reserved for PLM warnings gt Ared LED indicates a fault clip or mute An Event Log file lists all warnings with date and time stamps please refer to the Lake Controller Operation Manual for further information the Event Log Please refer to Table 7 2 and T
20. Lake Controller software Please refer to the Lake Controller Operation Manual for further details gt MAC Displays the unique Media Access Control Ethernet address for the processor This value cannot be changed gt FID Displays the Frame ID a unique Lake product identifier that cannot be changed 7 11 5 5 Latency Match To turn Latency Match on or off select the parameter using the adjacent button then change the status using the rotary encoder When Latency Match is ON the LM Series device adds delay to match the overall processing delay of legacy Lake Contour Pro 26 and Mesa Quad EQ products Please refer to the Lake Controller Operation Manual for further information 58 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN 7 11 6 Front Panel Display Controls MENU FRAME FRONT Menu Frame Front MUTE Contrast ENABLE METER Dimming Ch Order Front Panel Interface Figure 7 18 Front Panel Display Controls Menu Contrast To adjust the front panel LCD contrast select this option then use the rotary encoder to change the value Dimming To adjust the front panel LCD amp LED brightness select this option then use the rotary encoder to change the value Channel Order To adjust the order in which both inputs and outputs are displayed on the front panel in all views select this option then use the rotary encoder to change the value between TOP DOWN default and BOTTOM UP 7 11 7 Frame
21. MODULES LEVELS Generally output gain values are configured within a Module loudspeaker preset file and should not need to be adjusted further LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 87 Application Guide 10 3 5 Attenuator An attenuator gain adjustment is provided for each power output channel in the PLM This control replaces the traditional volume control found on conventional amplifiers and should typically be left at O dB during use To adjust navigate to I O CONFIG gt EVENTS amp CONTROL gt STATUS in the Lake Controller Please refer to the Lake Controller Operation Manual for further details 10 3 6 Amp Gain The Amp Gain corresponds to the gain adjustment in a conventional separate loudspeaker processor and amplifier system When using a pre defined Module loudspeaker preset file the Amp Gain settings will normally remain as defined in the file The limiter and output gain settings of the Module were configured with this gain setting and will not be automatically compensated if changes are made This configuration scheme though unusual allows for compatibility with legacy Dolby Lake products When creating a loudspeaker preset Module file adjust by navigating to I O CONFIG gt EVENTS amp CONTROL CONTROL in the Lake Controller Please refer to the Lake Controller Operation Manual for further details 10 4 Gain Level Optimization 10 41 Maximize Volume Capability To maximize the volume c
22. Maintenance For safe and reliable operation the dust filters on both sides of the front panel behind the grilles should be removed and cleaned regularly to ensure maximum airflow through the device If the dust filters are not maintained there will be safety risks for example high internal temperatures could ignite the dust and start a fire There is also a risk that the unit will malfunction since it is dependent on constant airflow from front to rear If the dust filters are not clean and the unit malfunctions any resulting problems will not be covered by the warranty LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 Table of Contents 1 Important Safety Instructions eseessessseeeeeseeeeeee eene nnne n nnn nenne nennen nn nnne nnns i 11 miportantsatety InSteUCtlOTiS x i erts be AAE R i MESE MEIN i T3 Explanation oft Graphical SymiDOlS i WARNING ii SC AU TIONS scettur A NEN EM ii 1 6 FCC Compliance Notice Radio Interference eene emen ii 1 7 User Responsibility n AEA nnne iii 2 Welcome iiicsitienstscsacesnccnestesandessvaunstecesicannexbs AERE RRERER ERR aana aa EDE NEES EAn RE R aae PEE PAAS aea 1 oT 1 2 2 CIS c
23. Never connect a digital signal source to an analog input or an z 2A analog signal source to a digital input 10 6 3 2 Interconnection Options If multiple PLM Series devices are receiving the same AES3 signal connections may be configured in two ways 1 Daisy Chain Connect the signal source e g mixing console digital snake or distribution amplifier to the AES3 input on the first PLM Connect the adjacent Link output on the same unit to the Input on the next PLM and continue connecting in this manner Up to 20 PLM units may be daisy chained in this manner though the total may be dependent on environmental conditions and the quality of connecting cables 2 AES3 Distribution Amplifier Connect the input of the distribution amplifier to the signal source and connect the outputs individually to the PLMs The number of available outputs must be equal to or greater than the number of PLM devices to be driven The distribution amplifier must be specifically designed for AES3 signals a device made for analog signals will not function in this capacity Please refer to section 10 6 4 for further information Consider the application requirements carefully before choosing an interconnection configuration Note that the daisy chain option presents a potential single point of failure scenario failure of one cable or connection will affect all subsequent devices in the chain Use of distribution amplifiers avoids this scenario although extra exp
24. Power Output Performance The PLM uses Lab gruppen s patented Class TD technology in the output stages which couples the ef ficiency of Class D topologies to the sonic purity of Class B designs The primary benefit is that Lab gruppen s Class TD works perfectly under all load conditions The output maintains its flat frequency response even into complex loads with very low nominal impedances Reliability is very high and there is no interference with nearby RF equipment Superior efficiency allows greater power density while minimizing cooling requirements yet sound quality matches that of the best Class B designs 5 21 Symmetrical Power The PLM models can deliver power as shown in Table 5 1 when all channels are driven equally uns M ue PLM 100000 Max Output power Watts PLM 14000 Max Output power Watts PLM 200000 Max Output power Watts Table 5 1 Symmetrical Load Power Ratings LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 15 Operation and Performance 5 2 2 Asymmetrical Power The PLM models can deliver power as shown in Table 5 2 when every other channel is driven 3 dB lower than the other This can occur when the load on the individual power output channels within the amplifier contain different frequency ranges PLM prre TE Max prre TE power Watts PLM 14000 Max Output power Watts PLM 200000 Max Output power Watts Table 5 2 Asymmetrical Load Power Ratings 5
25. SWITCHED 100 1000 Base TX l Figure 8 16 etherCON Network Connectors The switched 100 100 Base T network connections auto sense whether standard or crossover Cat 5e cables are in use The green ACT LED illuminates flashes to show network activity and when a 100 Mbps connection is present the orange LED illuminates static to indicate a 1000 Mbps connection Pre made cables with moulded RJ45 plugs are recommended If it is necessary to make up custom Cat 5e network cables use pinout described in Table 8 4 Brown White Blue White fs Geek Wh ENS Table 8 4 RJ45 Wiring amp Pin Out Description LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 71 Back Panel Interface Brown Brown White Green Blue White Blue Green White Orange Orange White Figure 8 17 RJ45 Wiring and Pin Out Diagram When the device is connected to an active network the yellow LINK LED illuminates above the connector in use Data activity on the network is indicated by illumination of the green ACT LED It is normal for the ACT LED to flicker either sporadically or continuously 8 4 1 Primary Network Connection O The Primary Network connection is used for Lake Controller connectivity and Dante digital audio Please refer to section 4 2 for additional information 8 4 2 Secondary Network Connection The Secondary Network connection may be used for a redundant Dante digital audio network Please refer to secti
26. Six output channels The LCD displays Positive for normal operation and Negative when the phase is inverted LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 49 Front Panel Interface 9 8 7 11 2 4 Amp Gain MENU MODULE AMP GAIN By default all outputs are selected use the rotary encoder to change the gain of all power outputs or press the associated output button to deselect one or more outputs Amp Gain adjusts the gain of the PLM s power output stage for each output channel The default setting is 35 dB variable in 0 1 dB increments from 22 dB to 44 dB Care should be taken in altering Amp Gain which should be adjusted in conjunction with the Gain controls and limiter thresholds 7 11 2 5 Limiters MENU MODULE LIMITERS Various parameters of the PLM s Inter Sample Voltage Peak Limiter ISVPL and the Lake LimiterMax pa rameters can be adjusted via this submenu By default simultaneous adjustment of most limiter parameters across all output channels is selected although channels may be adjusted individually if required Attack and Release times must be adjusted individually per channel Inter Sample Voltage Peak Limiter Threshold ISVPL Threshold The ISVPL prevents the voltage of the PLM outputs from exceeding a pre determined value The ISVPL Threshold can be adjusted between 17 8 V to 600 V which represents the
27. and type of speaker connected to it It is intended to be used pre performance prior to running SpeakerSafe op Thr This term refers to the Link connectors provided on the PLM for daisy chaining further amplifiers or other equipment The use of these Loop u to connect further devices is termed a loop thru AC Add In addition to an IP address every device on an Ethernet network has a MAC address This address is fixed at the time of manufacture ress and is effectively the permanent identifier of the physical unit MAC stands for Media Access Control axPeak Lake s LimiterMax provides independent dynamics control over signal peaks MaxPeak and the average signal level MaxRMS axRMS See MaxPeak The term used in the Lake Controller to describe the virtual set of signal processing that routes an audio input to the various frequency odule weighted outputs of a crossover The processing system within the device allows for two Modules each of which may be assigned a range of crossover configurations input sources etc odule Preset A class of Preset within the Lake processing system A Module Preset Module file contains all the configuration data and settings for one Module and is saved in the Lake Controller software not in the hardware device Offline A device on an Ethernet network which is not communicating with the rest of the network either due to a fault or intentionally is said to be offline Online A device on an Ethernet ne
28. are a Nationally Recognized Test has been spilled or objects have fallen into the apparatus the ing Laboratory NRTL apparatus has been exposed to rain or moisture does not operate normally or has been dropped 5 Use the mains plug to disconnect the apparatus from the mans 1 3 Explanation of Graphical Symbols 6 WARNING To reduce the risk of fire of electric shock do not expose this apparatus to rain or moisture 7 Do not expose this equipment to dripping or splashing and The lightning bolt triangle is used to alert the user to ensure that no objects filled with liquids such as vases are the presence of un insulated dangerous voltages placed on the equipment within the unit s chassis that may be of sufficient 8 The mains plug of the power supply cord shall remain readily magnitude to constitute a risk of electric shock to operable humans 9 Do not connect the unit S output to any other voltage source such as battery mains source or power supply regardless of whether the unit is turned on or off user to presence of important operating and service 20 Do not remove the top or bottom cover Removal of the dE cover will expose hazardous voltages There are no user pront serviceable parts inside and removal may void the warranty 21 Anexperienced user shall always supervise this professional audio equipment especially if inexperienced adults or minors are using the equipment
29. details AES3 provides for multiple sampling rates and resolutions of up to 24 bits this device accepts sample rates from 44 1 to 192 kHz 10 6 2 System Latency and Delay Compensation All types of digital audio processing inherently involves a small processing delay referred to as latency If the processing chain does not involve analog to digital or digital to analog conversion the amount of latency is usually very small and often may be disregarded However in complex systems involving multiple digital audio components and connections enough delay may be generated to cause audio phasing problems Therefore the lowest latency is always preferred and itis always important to consider system latency delays when calculating and adjusting overall delay for time aligning multiple loudspeaker systems 92 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Application Guide 10 6 3 Connections and Cabling 10 6 3 1 Input and Link Connectors An AES3 input signal is connected to the XLR3F connector labelled INPUT 1 2 in the AES3 input section on the rear panel An XLR3M connector labelled LINK 1 2 is provided as a loop through output for daisy chaining multiple PLM Series devices The Input and Link connectors are identical for the analog and digital inputs so care must be taken when connecting audio particularly when analog inputs are used as a backup signal source Connectors should be clearly labeled to prevent any confusion
30. details Q Menu After pressing the MENU button the LCD will display the top level menu In Menu Mode the dynamic function buttons enable access to various information and functionality Please refer to section 7 6 for further details Dynamic Function Buttons with LEDs Left of LCD The function of these buttons change according to the currently selected view or menu gt n Menu Mode they are used for menu navigation and for parameter selection gt n Meter Mode they provide Module input mute unmute functionality in conjunction MUTE ENABLE LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 9 Product Overview The LED in the top button provides Frame fault and warning indications The middle two buttons provide Module input mute functionality mute indication and faults and warning indications relating to the PL M inputs The bottom button is used only in Menu Mode or to lock the front panel buttons Please refer to chapter 7 for further details O Dynamic Function Buttons with LEDs Right of LCD The function of these buttons change according to the currently selected view or menu gt n Menu Mode they are used for menu navigation and for parameter selection gt n Meter Mode they provide PLM output mute unmute functionality in conjunction MUTE ENABLE All LEDs provides mute clip fault and warning indications for the PLM power outputs channels Please refer to chapter 7 for further details Communication LED
31. digital clocking system can either generate its own internal clock or synchronize to an incoming external clock source via the AES3 digital input 10 7 2 Clock Source Priorities There are two options for clock source configuration Manual Configuration or Automatic Detection LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 95 Application Guide For Manual Configuration the selected internal or external clock source remains fixed regardless of whether a compatible clock signal is preset For Automatic Detection the most appropriate clock matching the selected base rate is automatically selected according to the following priorities 1 AES1 Input 1 2 2 Internal Clock When using automatic detection the AES3 digital input is monitored and will switch the clock source back and forth depending on the availability of an AES3 signal Please refer to the Lake Controller Operation Manual for additional information 10 7 3 Dante Clock Configuration Dante uses its own digital clocking technology across the Ethernet network to ensure that all Dante devices are synchronized As part of this logic an order of priority is defined to identify which device becomes the Dante Master A Dante capable device with a valid BNC Word Clock is chosen as the highest priority followed by a device with a valid AES3 signal then SPDIF then an internally generated clock Dante only operates at 48 kHz or 96 kHz with the PLM digital clock on all
32. elements can be removed for cleaning please refer to section 9 2 for further information NEVER operate this device without the dust filters z in place 8 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Product Overview e Display The display illuminates when the device is on The LCD function buttons and the rotary encoder provide real time control and monitoring of most parameters The LEDs embedded in the function buttons indicate available menu options provide confirmation of Controller communication and indicate various faults and warnings The brightness and contrast of the display and front panel LEDs can be adjusted via the front panel menu Please refer to chapter 7 for further details o Standby PLM Series devices are powered on and to standby using the top left button or via the Lake Controller Mute Enable Select MUTE ENABLE to allow the dynamic function buttons to operate as mute controls for the Module inputs and power output channels The MUTE ENABLE button flashes when the mode is selected a subsequent press deselects this mode If left activated MUTE ENABLE mode will automatically disable two minutes after the last mute action Q Meter The METER button scrolls through various meter views including the default Home View Module View Temperature View and Input View Pressing METER from Menu Mode returns the screen to Meter Mode with the Home View displayed Please refer to section 7 5 for further
33. has exceeded the safe maximum value and the PAL has become active 200000 PAL ACTIVE Warning Output power is limited due to the PSU maximum current or power level has been reached and PAL has become active PSU FAULT Frame Fault PSU Undervoltage The Power supply did not start up properly It could be due to undervoltage on the mains or due to an internal non user serviceable fault If the mains are checked to be OK and the fault persists the unit should be returned to your dealer 200000 PSU POWER PROT Frame Fault PSU Power Protect Fault Low input voltage high power demand 200000 PTL ACTIVE N A Warning The output power is limited due high temperature in the Power supply and the PSU Temperature Limiter is active SENSE FAULT Frame warning Sense Fault Warning The output Voltage and Current sensors are lost The PLM is OK for continued operation but is at risk of entering protective mutes states Return device to dealer SERVICE CH Channel Fault Unit Needs Service One or more breakers in the power stage have blown This is not a user servicable fault return device to dealer SHORT CIRCUIT Channel Fault Short Circuit Protection The PLM is measuring both very high load current and very low output voltage Short circuit protection is active SPKSAFE INACT SpeakerSafe Not Started Warning Warns that after LoadSmart verification Speak
34. is reached individual parameters may be selected for adjustment by pressing the adjacent button The selected parameter value s are highlighted and are adjustable using the rotary encoder A parameter may be adjusted simultaneously across multiple channels by selecting all values to be adjusted any current value offsets are retained Some parameters default to multiple selection with all inputs or outputs adjusted simultaneously Changes are effected in real time and a stored without further confirma tion Pressing EXIT returns to the previous menu level automatically retaining any parameter changes 46 Operation Manual Rev 1 3 0 LAB GRUPPEN Front Panel Interface pum M H w All parameters are also editable via the Lake 24 Controller unless specified otherwise 711 11 Parameters with Individual Values and Group Totals The following parameters display two values gt MODULE gt GAIN gt MODULE gt DELAY gt MODULE gt LIMITERS gt MAXRMS LEVEL gt MODULE gt LIMITERS gt MAXPEAK LEVEL The Module parameter can be adjusted using the rotary encoder The Group total shown in brackets is only adjustable using the Groups function in the Lake Controller The Group total is the sum of the individual Module value plus any values for this parameter on all Groups to which the Module is assigned Please refer to the Lake Controller Operation Manual for further information on Groups
35. note that the method shown in Figure 3 2 additionally provides extra security against unauthorized removal For situations where rapid removal and replacement is required the method shown in Figure 3 3 should be used 4 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Installation Co Figure 3 1 Rear Support Bracket and Mounting Hardware IIT IN Le Figure 3 3 Use Tube for Slide On Installation LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 5 Installation 3 3 Cooling 3 31 Overview The PLM Series devices use a forced air cooling system with airflow from front to rear allowing high continuous power levels without thermal problems Front to rear airflow is preferable as air at the front of a rack is cooler than that at the rear in nearly all situations never attempt to reverse the airflow The opera tion of the PLM s cooling system is dependent on front to rear airflow it will not function effectively with external airflow in the opposite direction Make sure an adequate air supply is provided in front of the PLM and that the rear of the PLM has sufficient space to allow air to escape If the PLM is rack mounted never operate the unit with any front or rear rack doors or covers in position It is recommended to keep the ambient temperature around the PLM as cool as possible An increased temperature can have a significant negative impact on the expected lifetime on the compo
36. output stage When a PLM power output is muted the LED turns red and the text AMP CH MUTE is displayed on the LCD When unmuted the LED turns green unless any other output warning conditions are active LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 31 Front Panel Interface Fault condition LED indications take priority BR over mute status indications If a fault ENG condition occurs the LED will indicate the OMS faut and not the mute status 78 5 LED Fault Warning and Clip Indication A tricolor LED is embedded inside each of the eight dynamic function buttons These convey a variety of status indications including faults and warnings signal clip indications Module input mute Module output mute and Power Output mute Table 7 1 summarizes the meaning of the LED indications Table 7 1 LED Fault and Warning Indications An unlit output LED indicates either the channel is not available for the model in use or that the power output channel is not routed to a Module output channel r4 7 8 51 Clip Indication The front panel LEDs also indicate input and output clip or pre clip conditions that can occur within the PLM Input Clip Input clipping is monitored at two stages in the signal path gt Analog Input Stage If the input signal exceeds either 12 dBu or 26 dBu according to analog sensitiv ity setting a clip indication is displayed Not applicable for AES or Dante inputs gt Module
37. place 8 1 1 Bridge Mode Power outputs may be bridged on all PLM models by following the configuration instructions in the Lake Controller Operation Manual I O CONFIG gt OUTPUT CONFIGURATION and the wiring instructions in this chapter Bridge Mode can only be activated deactivated using the Lake Controller software When Bridge Mode is activated CLASS 3 wiring is z required 8 1 2 speakON Connectors Figure 8 1 shows a 2 channel PLM 14000 with speakON connections speakON connections are also available on the 4 channel PLM 100000 and PLM 200000 Sections 8 1 2 1 and 8 1 2 2 describe the wiring pin out and output configuration for the 2 and 4 channel models respectively LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 63 Back Panel Interface 8 1 2 1 2 Channel PLM speakON Connections 2 channel models provide both power output channels simultaneously on two 4 pole speakON connectors Both connectors carry both channels the second connector offers the channels in reverse order SPEAKER OUTPUTS Figure 8 2 speakON Connections for 2 channel PLMs NL4 1 Ch NL4 2 Ch 1 amp 2 2 amp 1 x NL4 1 Ch 1 amp 2 Bridge Mode Table 8 1 speakON Wiring and Pinouts for 2 channel PLMs incl Bridge Mode NL4 PLM Output Channels 1 amp 2 PLM Output Channels 2 amp 1 BRIDGE MODE NL4 PLM Output
38. that presented by one speaker Therefore the current that two speakers will attempt to draw from the output stage is double that for one speaker and this higher current may be sufficient to cause the Current Peak Limiter to become active The more speakers connected to an output in parallel the lower the impedance and the higher the current draw Multiple loudspeakers may be driven by a PLM power output more satisfactorily if a series parallel wiring configuration is adopted Please ensure care is taken to match polarity correctly When using series parallel wiring the nominal impedance is the same as with one speaker however the principle of power sharing still applies and it is not possible to get the amplifier section to deliver more than its rated power Nominal loads as low as 2 ohms are supported by the PLM z However a 2 ohm nominal load has impedance dips at its EN resonances below 2 ohms in such cases it is likely that the resulting higher current will cause CPL to activate LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 91 Application Guide 10 6 Digital Audio Connections Whenever possible it is preferable to connect a digital rather that analog input signal to the device This is particularly relevant if the source signal is already in the digital domain such as the source from a digital mixing console or digital distribution system The primary cause of signal distortion and signal delay latency is t
39. that this is the case CPL An abbreviation for Current Peak Limiter a Lab gruppen protection technique which ensures that the amplifier s output transistors can never attempt to deliver more than their rated current Crossed Network Cable An Ethernet cable in which four of the eight conductors pins 1 2 5 amp 6 are not wired pin to pin Such a cable is required in conventional IT networks to connect two PCs together without using a hub or switch The auto uplink feature of the Ethernet ports allows crossed cables to be used if wished See also Straight network cable A new generation audio data protocol developed by Audinate Pty Ltd allowing multichannel high resolution digital audio plus control Dante data to be transmitted via standard IT industry networks using TCP IP data packets The Lake processing system integrated within the PLM includes a dual redundant Dante network interface providing digital audio inputs and outputs via Ethernet dBu dBu s are usually used instead of voltages to describe signal levels in audio systems A signal level of 0 dBu may be taken as 0 775 Vrms Delay Up to two seconds of delay may be added to the input and or output channels to time align loudspeaker arrays Digital Gain Offset Distribution Amplifier Digital gain offset is effectively a fine gain adjustment performed in the digital domain which can be applied to digital input signals to optimize the signal to the gain str
40. the MUTED and UNMUTED states LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 51 Front Panel Interface 711 3 Input Config Submenu MENU INPUT CONFIG Menu Input Cfg MUTE Router 1 ENABLE METER Router 2 AES Term lso Float Figure 7 12 Input Config Submenu This menu provides configuration options for input routing along with settings for AES Termination and Iso Float as described in the following sections 7 11 3 1 Router 1 2 MENU gt I O CONFIG gt ROUTER 1 2 Menu t Cf MUTE ENABLE METER Autoselect Analog 26 00 dBu Figure 7 13 Input Router 1 The signal flow diagrams in chapter 6 highlight that there are two Input Routers available on PLM Series devices The input that is selected within the router can be used by the Input Mixer for either Module A or Module B Each router has four priority levels allowing any input to be placed in a sequence providing automatic input signal fail over AES3 and Dante inputs have priority over analog inputs 52 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Front Panel Interface Only one analog input is allowed in each router and z the analog input must be at the lowest priority level in relation to any other inputs NOTE Two modes of input selection are available Auto Select and Forced Selection The selected setting is also visible from the I O STATUS screen on the front panel and via the Lake Controller In Auto Selec
41. 0 465 1588 m power 1834 1150 684 2334 588 40 Ch 2448 2502 1569 1606 879 897 2999 3060 756 771 2 67 Q Ch 2544 2601 1593 1630 951 971 3247 3313 818 835 20 Ch 2623 2682 1626 1664 997 1017 3403 3473 857 875 20 kHz Surveillance 16 Q0 Ch tone Mains connector 230 V CE version 230 V ETL version 115 V ETL version 32 A Neutrik PowerCon Twist lock 1 The amplifier section s PSU operates as a non resistive load so the calculation Volts x Amps Watts would not be correct Instead measured and specified here is what is known as the Active Power of the amplifier section providing useful real world values of power consumption and heat dissipation 2 Current draw figures measured at 230 V 115 V figures are converted from 230 V figures 3 Figures measured at maximum sustainable power without tripping the mains breaker Listed separately for 30 A 115 V and 16 A 230 V operation Note that the max power condition is very extreme and will not occur during normal operation Also note that the mains breaker will not be tripped even if operation is momentarily in excess of max ratings 4 Italics used for conditions that if sustained over long time periods may trigger the mains breaker Therefore these measurements should not be used when calculating cooling requirements as they cannot be sustained by the mains breaker over time Table
42. 12 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Product Overview Binding Posts In this version the power outputs for loudspeaker connection are available on four separate pairs of fully enclosed binding posts Bridge Mode can be enabled via the Lake Controller software please refer to the Lake Controller Operation Manual for further information Channel configuration for the binding posts is dependent on the PLM model please refer to section 8 1 3 of this Operation Manual for standard and Bridge Mode wiring Q speakON Connectors The speakON connector configuration differs on 2 channel and 4 channel PLM models On 4 channel models the power outputs are simultaneously available on a single 8 pole speakON connec tor and on two 4 pole speakON connectors The two 4 pole connectors carry the outputs of channels 1 amp 2 and 3 amp 4 respectively On 2 channel PLM models the two power output channels are available simultaneously on two 4 pole speakON connectors Both connectors carry both channels The second connector offers the channels in reverse order Bridge Mode can be enabled via the Lake Controller software please refer to the Lake Controller Operation Manual and to section 8 1 2 of this Operation Manual for further details on standard and Bridge Mode wiring for speakON connectors 4 2 3 Ethernet and Power Connectors 9 Primary Network Connector The primary Neutrik RJ45 etherCON connection provides integration into
43. 2 3 Additional Documentation This document the PLM Operation Manual serves as the primary reference source for detailed informa tion on the installation and operation of PLM Series Powered Loudspeaker Management systems It also provides detailed information on set up and configuration using the front panel interface If you intend to use the device as part of a networked system or access features via the Lake Controller please refer to the various supporting documents which can be located via these methods gt Start gt Programs gt Lake Controller gt Documentation after installing Lake Controller software gt On the Installer CD ROM or the downloaded software installer gt Online at http labgruppen com index php products documentation LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 3 Installation 3 Installation 3 1 Unpacking Carefully open the shipping carton and check for any damage to the device or the supplied accessories Every Lab gruppen product is tested and inspected before leaving the factory and should arrive in perfect condition If any damage is discovered please notify the shipping company immediately Only the consignee may initiate a claim with the carrier or their insurers for damage incurred during shipping Save the carton and packing materials for the carrier s inspection In addition to the PLM Series device the shipping carton include the following items gt PLM Series Quick Star
44. 2 3 Power Over Time Power ratings given above are applicable for PLMs running at these levels for a period of 60 minutes Due to thermal considerations in the power supply and elsewhere it is possible to draw higher power levels for a shorter period of time The graph below illustrates for the example PLM 100000 how the rated power figures are derived and the higher short term capability Peak output voltage at max power burst x E o D S z o gt 2 F g E o The power rating interval All channels 2 70hm peaks Asymmetric 2 70hm peaks All channels 2 70hm rail Asymmetric 2 70hm rail Asymmetric The 2 weak channels Figure 5 1 Power Rating Levels Over Time PLM 10000Q Power ratings are based on a duty cycle of 25 ms full power every 400 ms Between bursts a lower signal level applies such that the continuous average power is 1 8th of the rated power 16 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Operation and Performance In reality when some channels are delivering less than maximum rated power energy reserves in the PSU are available to permit other channels to deliver more power The graph shows the peak output voltage over time for a continuous sine wave is applied If all four channels are driven with the same signal into the same impedance solid red line then the rail voltage dotted red line will
45. Attenuator Mute Phase Rev 5 na a E 2 Attenuator Mute Phase Rev Figure 6 2 Signal Flow Diagram 4 channel PLM Part 2 26 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Signal Flow and Lake Processing The sophisticated output section monitors faults and generates warnings when appropriate warnings are displayed on the front panel of the PLM and also sent as messages over the control network In the rare event that maximum ratings are significantly exceeded the PLM will shut down until the condition has been rectified or the incorrect setting has been readjusted Sensing circuits also transmit local output power stage temperature processor card temperature and PSU temperature to the appropriate protection circuits Please refer to section 5 3 on page 17 further details Table 6 1 lists PLM Series analog input sensitivity in dBu and Vrms for various Amp Gain settings and maximum minimum ISVPL settings assuming an analog input headroom of 26 dBu INPUT SENSITIVITY ISVPL SETTING 194 193 V 153 V 17 8 V GAIN tas dBu vems Vrms dBu vms dBu dBu 16 T 44 41 38 35 29 26 k 22 99 w N Table 6 1 Analog Input Sensitivity in dBu and Vrms 6 3 Lake Processing and Control As outlined in section 2 2 3 this device integrates seamlessly into the Lake Processing environment providing all features functionality and connec
46. ESS signal format carries two channels of audio and associated data on a single cable connector Selection of Ch 1 or Ch 2 is performed within the digital processing section of the PLM and is controlled from the menu system Please refer to section 7 11 3 1 for further details The AES3 Link connector may be used to daisy chain the inputs of multiple PLMs together Unlike daisy chaining of analog inputs attention must be paid to line termination When daisy chaining PLMs together only the last PLM in the chain should be set to TERMINATED All other PLMs should be set to UNTERMI NATED Please refer to section 7 11 3 2 for further details As with balanced analog audio there is a finite limit to how many PLMs may have their AES3 inputs daisy chained together The practical limit will be determined by cable type and length as well as the output circuit of the driving source It may be necessary to employ an AESS3 line driver or distribution amplifier to achieve reliable results in some situations 70 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Back Panel Interface Tests indicate that up to 20 PLMs may be have their AES3 inputs daisy chained together however circumstances and cabling used may reduce this figure Please refer to section 10 6 r4 8 4 RJ45 etherCON Network Connections Two RJ45 etherCON style network connections are provided as shown in Figure 8 16 1000 1000 Mbps PRIM ink Mbps SEC INK L_
47. Input Mixer gains can remain at 0 00 dB for most configurations if only one input channel is used per Module the other can be set to INF To adjust navigate O CONFIG and tap the Input Mixer blocks for the Module in the Lake Controller Please refer to the Lake Controller Operation Manual for further details 10 3 3 Module Input Gain Input Gain is used to adjust the level between different speaker cabinets in the system This gain can remain at 0 00 dB unless a lower level is required for the cabinet s driven by this Module To adjust navigate to MODULES EQ LEVELS LEVELS in the Lake Controller Please refer to the Lake Controller Operation Manual for further details 10 3 4 Module Output Gain Factory and User Gain are provided for each Module output These two stages provide a level of security and control for the system designer Factory and a further level of adjustment for the user User both of which combine to balance the level between frequency bands in a multi way crossover Contour configura tion or the Module output level Mesa configuration 1 Factory Gain is set by the system designer and can be hidden within the Module file The Factory Gain parameter is only accessible when the Module is unlocked and the Lake Controller is in Designer Mode Adjust via MODULES LEVELS METER OPTIONS ADJUST FACTORY 2 User Gain is editable by a user unless the system designer has locked away the parameter adjust via
48. LAB GRUPPEN Front Panel Interface 73 Power Button The unit is powered on by pressing the top left button on the front panel labelled Gin Figure 7 1 It has a bi color power symbol which illuminates red when connected to the AC mains and the unit is in standby mode It turns green when the button is pressed to turn the processor on A subsequent press of this button returns the unit to standby mode 7 4 Mute Enable Button The dynamic function buttons to the immediate left and right of the LCD are used as MUTE buttons only when the MUTE ENABLE button is activated flashing When MUTE ENABLE is activated the two central buttons on the left act as Module mute controls and the four buttons on the right enable muting unmuting of the power output channels In Meter Mode Home View with MUTE ENABLE activated text on the LCD adjacent to each button indicates when a Module input or power output has been muted Meter Mode must be selected for MUTE ENABLE to be activated MUTE ENABLE is not available in Menu Mode To exit MUTE ENABLE mode press the flashing MUTE ENABLE button If no mute activity occurs for two minutes MUTE ENABLE mode will automatically be disabled 75 Meter Button The front panel display has two main operating modes Meter Mode default and Menu Mode In normal operation the display will be in Meter Mode The following views are available in Meter Mode Home View default Module View Temperature View and I
49. Lake Processing and Controls scc ess DR LE Rear 27 6 4 Modules and Frames 27 6 5 Loudspeaker Processor rennen nennen eene 28 arid 2 iennet e tenet iut tent aesti 29 7 FrontPanel nterface nire iet 31 p MES UM EE 31 72 Front Panel Key LOOK metusa det Unt deese Eme Re seqni 32 7 3 dPOWOCBUOD rei a med Eo a Ex 33 IV PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN 7 4 Mute Enable Button nenne nenne 33 Ao Meter BUON ae E E TL 33 76 Button 33 0 o 34 7 8 Dynamic Buttons Controls and LEDS sssssssssssse eene eene eene nre enne 34 7 9 Warming and Fault VEU T NIAT MER XR EYES 39 mm 42 A Menu teens 46 8 Back Panel Intertace eter SKARE EAR TEn 63 8 4 SPCAKEMOUTPUTS sectetut A E E
50. M 200000 is equipped with an under voltage limiter With mulitple powerful devices on a mains distribution line heavy current loads risk the reduction of voltage below that required for devices to function The PLM 20000Q s UVL reduces the mains current draw when voltage drop below 80 V The amount of reduction applied increases as mains voltage drops towards 65 V then at 65 V the power supply is shut down The mains supply is continually monitored and when sufficient voltage returns the power supply automatically restarts 20 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Operation and Performance 5 3 6 Current Average Limiter CAL The Current Average Limiter CAL monitors the RMS current drawn from each power output channel to ensure that the power output stages are not overloaded When activated it regulates the current to a safe level to protect the channel The CAL should not be activated in normal usage but if it is its opera tion is indicated by an active LED and the message CAL ACTIVE Further indication is given within the Lake Controller software 5 3 7 Voltage Clip Limiter VCL If current draw from the PLM s power supply is too high the PSU s regulation capability may be exceeded and the internal voltage rails may drop and cause clipping If this occurs the VCL acts rapidly to prevent clip ping on the subsequent peaks Limiting is performed by the ISVPL limiter in conjunction with the selected ISVPL profile Indicatio
51. Module B label and input gain meter Main Voltage and Ampere Meter PLM 200000 ONLY Output 1 V Voltage Meter 1 Current Meter P Power Meter L Gain Reduction Meter Output 2 V Voltage Meter Current Meter P Power Meter L Gain Reduction Meter Output V Voltage Meter Current Meter P Power Meter L Gain Reduction Meter e Output 4 V Voltage Meter Current Meter Power Meter L Gain Reduction Meter gt The Voltage Meter V indicates the PLM s power output stage voltage relative to its clip level gt Current Meter 1 indicates the current the power output stage is driving into its load relative to the maximum permissible current the fixed CPL allows gt The Power Meter P indicates the instantaneous output power being developed in the load relative to the PLMs maximum output power capability gt Gain Reduction Meter L indicates the degree of limiting being applied by the PLM ISVPL and or the Lake LimiterMax 710 3 Temperature View Temperature View provides information about the current operating temperatures within the PLM and the connected loudspeakers TEMP METERS P MUTE ENABLE METER Figure 7 7 Meter Mode gt Temperature View Q Current View title Power supply temp PSU amp Lake processor temp DSP as percentage of maximum Unused in Temperature View Unused in Temperature View 44 PLM Series Operation Manual Rev 1 3 0 LAB GR
52. NPUT 10 1 00 MUTE 00 ENABLE n MODULE B aw 4 1 00 or INPUT T 00 PU 9 BUT DK K MENU Figure 7 4 Meter Mode Home View Home View provides a summary of Module 1 0 gain level and limiter gain reduction along with frame module and channel labeling information The example in Figure 7 4 shows a stereo 2 Way with Module A Input 1 feeding power output channels 1 amp 2 and Module B Input 2 feeding power output channels 3 amp 4 Q Current View title amp Frame label Frame faults and warnings Module A label input gain meter faults warnings clips amp mutes Module B label input gain meter faults warnings clips amp mutes This section displays confirmation of the following settings 2 AES3 Input Terminated no icon Unterminated Analog Inputs Iso Float Grounded no icon Floating Dante Clock Master no icon Dante Slave or Dante Disabled Q Power output 1 label gain amp limiter meters faults warnings clips amp mutes Q Power output 2 label gain amp limiter meters faults warnings clips amp mutes Power output 3 label gain amp limiter meters faults warnings clips amp mutes Power output 4 label gain amp limiter meters faults warnings clips amp mutes Please refer to Table 7 2 and Table 7 3 on page 41 for full details on the faults and warnings that could be displayed in any of the above locations 42 PLM Series Oper
53. Operation Manual Rev 1 3 0 LAB GRUPPEN Front Panel Interface 7 11 2 1 Gain MENU MODULE GAIN Menu Al AUKA Bun Gain MUTE ENABLE METER 0 0086 Figure 7 11 Module Gain Edit Screen Press the illuminated button next to the input s and or output s for adjustment and use the rotary encoder to change the value s Multiple gain values may be adjusted simultaneously in 0 1 dB increments subject to defined level limits 7 11 2 2 Delay MENU MODULE DELAY Press the illuminated button next to the input s and or output s for adjustment and use the rotary encoder to change the value s Multiple delay values may be adjusted simultaneously in 0 1 ms increments subject to defined level limits The audio signal may be delayed typically for reasons of driver or delay subsystem alignment at either the Module inputs or on individual outputs Delay added at the inputs affects all outputs equally and will be generally be introduced to time align arrays of loudspeakers at different locations Delaying individual outputs may be desirable to time align drivers in the same cabinet or array 7 11 2 3 Phase Polarity MENU MODULE PHASE Press the illuminated button next to the input s and or output s to be adjusted and use the rotary encoder to change the value s Phase may be changed on one input or output at a time Audio phase reversal is available at the inputs to Module A and Module B and also individually on the
54. Output Mute 4 Power Output Mute With the exception of Module output mutes all types may be controlled from the PLM front panel in Meter Mode by activating MUTE ENABLE and selecting the associated input or output Meter View using the METER button Module input and output mutes can be controlled in z Menu Mode via the MENU button All mutes can also be controlled from the Lake Controller 7 8 4 2 PLM Input Mute The PLM input mute provides the ability to simultaneously mute unmute all modules or outputs that are sourced from the PLM input To mute or unmute the PLM inputs 1 Press METER until the Input Meter View is displayed 2 Press MUTE ENABLE 3 Use the associated dynamic function buttons to mute unmute the PLM inputs The PLM Input Mute is within the Lake Processing ZA system post input type selection and pre input mixing and routing Please refer to the Lake Controller User Manual for details of mute selection via the software 36 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Front Panel Interface 7 8 4 8 Module Input Mute The Module input mute provides the ability to mute unmute the audio signal at the module level Therefore the PLM input described in 7 8 4 2 remains unmuted and can be used by another module or directly routed to an output To mute or unmute a Module input 1 Press METER until Home View is displayed 2 Press MUTE ENABLE 3 Use the associated dynami
55. PLM Series Powered Loudspeaker Management systems PLM SERIES LAB GRUPPEN Qe Important Safety Instructions 1 Important Safety Instructions Before using the device be sure to carefully read the Safety Instructions Keep this document with the device at all times 11 Important Safety Instructions To prevent electric shock do not remove top or bottom covers No user serviceable parts inside refer servicing to qualified 1 Read these instructions service personnel 2 Keep these instructions 3 Heed all warnings A pr venir le choc lectrique n enlevez pas les couvercles II n y a 4 Follow all instructions pas des parties serviceable l int rieur tous reparations doit etre 5 Do not use this apparatus near water gue 6 Clean only with a dry cloth To completely disconnect this equipment from the AC mains 7 Do not block any ventilation openings Install in accordance disconnect the power supply cord plug from the AC receptacle with the manufacturer s instructions The mains plug of the power supply cord shall remain readily 8 Do not install near any heat sources such as radiators heat operable registers stoves or other apparatus including amplifiers Pour d monter compl tement l quipement de l alimentation hat produce heat g n rale d monter le c ble d alimentation de son r ceptacle La 9 Do not defeat the safety purpos
56. Preset Menu MENU FRAME PRST Menu Frame Prst Preset E 1 Example Preset METER Figure 7 19 Frame Preset Menu LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 59 Front Panel Interface To recall an existing Frame Preset use the rotary encoder to select the required Preset then press the RECALL button to overwrite the current configuration Frame Presets must initially be created in the Lake Controller and stored as a Preset using the Lake Controller or the PLM Series Preset Manager Up to 100 Frame Presets be stored in the device The data within a Frame Preset includes the configura tion of all Modules in the Frame including levels crossovers EQ input mixer and output routing As Frame Presets are stored within the device complete processor configurations can be recalled without connecting the device to a PC 711 8 Load Monitor Menu LoadSmart MENU LOAD MON Menu Load Mon MUTE of Cabinets ENABLE in Parallel METER Estimated of Cabinets Figure 7 20 Load Monitor Menu 7 11 8 1 Configure of Cabinets in Parallel This option allows selection of the number of speaker cabinets connected to each PLM output channel Select individual or multiple outputs and use the rotary encoder to set the value from 1 to 4 This value is used by LoadSmart and SpeakerSafe to confirm the correct connection and status of the speakers con nected to each PLM cha
57. SVPL threshold is lowered accordingly 5 3 4 Breaker Emulation Limiter BEL The Breaker Emulation Limiter feature is present only in the PLM 200000 The PLM 200000 is a power ful device that can draw a considerable amount of current from the mains supply The BEL models the temperature in the external breaker and limits the mains current to prevent it from tripping The BEL can be configured with both a breaker profile and a current value The current value can be set from 5 to 32 Arms There are three different profiles available for selection gt Conservative The conservative profile allows no momentary current above the configured threshold gt Fast The fast profile models the time constant of the trip curve corresponding to a fast breaker It momentarily allows current above the threshold to pass for a short time leading to an increased mod eled temperature For the limiter to disengage the current must reduce below the threshold to enable the breaker to cool down gt Universal The universal profile models the time constant of the tripp curve corresponding to a slow breaker It momentarily allows current above the threshold for a longer time leading to an increased modeled temperature For the limiter to disengage the current has to reduce below the configured current for the breaker to cool down The BEL can be configured via the PLM front panel and via the Lake Controller 5 3 5 Under Voltage Limiter UVL The PL
58. UPPEN Front Panel Interface Unused in Temperature View Output 1 AMP Temp of power output VC Temp of voicecoil MAG Temp of magnet Output 2 AMP Temp of power output VC Temp of voicecoil MAG Temp of magnet Output 3 Temp of power output VC Temp of voicecoil MAG Temp of magnet e Output 4 AMP Temp of power output VC Temp of voicecoil MAG Temp of magnet gt indicates the current actual temperature of that channel s power output stage as a percentage of its maximum permitted value The numerical value is in dB relative to signal clip gt computed temperature of voice coil VC of the loudspeaker connected to that output channel This parameter is calculated using the power currently being dissipated in the load and by using the loud speaker data from the LoadLibrary Fingerprint as presented by the SpeakerSafe output The numerical value is displayed in degrees Celsius gt computed temperature of the magnet MAG of the loudspeaker connected to the output channel This parameter is calculated and displayed in a similar way to the voice coil VC temperature 710 4 Input View Input View enables inspection of the input signal before the input mixer i e prior to the Home View Module input meters INPUT MIK NAZ jl ENABLE 04 K MODIN MUTE Figure 7 8 Meter Mode gt Input View Current View title amp Frame label Frame faults and warnings
59. VAC 30A Standby Power On Idling Pink pseudo 16 0 Ch noise 1 80 Ch 40 Ch 2 67 O Ch 20 Ch Sine 20 kHz 16 Q Ch Mains voltage 120 VAC 30A Standby Power On Idling Pink pseudo 16 Q Ch noise 1 80 Ch 40 Ch 2 67 Q Ch 20 Ch Sine 20 kHz 16 0 Ch Mains voltage 208 VAC 17 3 A Standby Power On Idling Pink pseudo 16 0 Ch noise 1 80 Ch 40 Ch 2 67 Q Ch 20 Ch Sine 20 kHz 16 Q Ch Mains voltage 230 VAC 16 A Standby Power On Idling Pink pseudo 16 miesi 80 Ch 40 Ch 2 67 O Ch 20 Ch Sine 20kHz 16 0 Ch Mains connector 230 V CE version 230 V ETL version 115 V ETL version 32 A Neutrik powerCON Twist lock 1 Pink pseudo noise at 1 8th of rated power or at maximum available line current for the given mains distribution Table 9 2 PLM 200000 Current Draw and Thermal Dissipation LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 79 Appendix PLM 14000 Rated power Line Current 2 Watt 1 Thermal Dissipation 120 VAC 230 VAC Out Dissipated BTU hr kCal hr Standby 12 42 Powered on idling 116 Amp 1 Pink noise 1 8 160 Ch 8 5 44 rated power 13 7 78 40 Ch 23 4 12 2 2 67 Q Ch 30 0 m 20 Ch 34 0 128 Pink noise 160 Ch i 104
60. able 7 3 below and to Table 9 1 on page 76 for a detailed description of faults and warnings 79 Warning and Fault Indications Table 7 2 lists the warning conditions signified by a yellow LED Table 7 3 lists the fault conditions signified by a red LED LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 39 Front Panel Interface PLM Model L 200000 BEL Active Feme 1 BELACTIVE NA ALL GomrolerOfins Fame 1 CTRL OFFLINE NA ALL Load Not Verified Module 2 3 LOAD NOT VER LoadSmart Load Not Verified Channel 5 8 0000 PSU Mains Gitch Frame 1 MAINS GLITCH itch on Mains Votage Detected 200000 RsUPewerumt Fame 1 PALACTIVE N A A A Table 7 2 Warning Conditions Yellow LED 40 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Fault Clip Mute Type On Screen Warning Text Front Panel Interface Event Log Text Amp Ch Mute Amp Temp Fault CH MUTE TEMBER SEEK Amp Channel Mute Temp Fault Amp Channel AL Analog Input Fault Frame ANALOG IN FAULT Frame Fault Analog Input Check AC Mains Frame CHECK AC MAINS Frame Fault Check AC Mains AL Current Average Limiter Chann el CAL ACTIVE n a AL Current Protection Limiter Chann el CURRENT CLIP N A AL DSP Area Temp Fault Frame TEMP FLT DSP Temp Fault DSP Area AL Input Channel Mute I
61. al to analog converter gt release time of gain reduction is adaptive depending on the dynamics of the signal It is possible to select different ISVPL profiles for limiting optimization for a specific frequency band and personal preference The profiles are divided into two categories with one category optimized for low distortion and the other focusing on producing high sound pressure level SPL Within each category there are profiles optimized for the different frequency bands 5 3 11 Low Distortion Profiles gt Universal The universal profile is a soft limiter that can be used for all frequencies and is conservative in its action upon VCL and CPL gt Sub LF The Sub LF profile is tuned for frequency bands below 600Hz It has longer attack and release times and is less conservative when it comes to acting upon VCL and CPL LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 17 Operation and Performance 5 3 1 2 High SPL Profiles High SPL profiles do not use the adaptive release time feature High SPL profiles optimized for high frequen cies use less of the look ahead delay peak rounding feature this feature is used most in the Sub profile and least the HF profile gt Sub The Sub profile is optimized for frequencies between 20 200 Hz gt LF The LF profile is optimized for frequencies between 20 1200 Hz gt MF The MF profile is optimized for frequencies between 300 6000 Hz gt HF The HF
62. alleled to the input connectors to provide an unprocessed analog loop through to feed additional PLM Series units or other equipment AES3 Inputs A latching XLR3F connector is provided which accepts an AES3 digital audio signal Input impedance is 110 ohms please ensure that 110 ohm digital audio cables are used standard XLR microphone cables are rarely suitable for reliable digital audio transmission AES3 is a stereo digital format and therefore both inputs fed via single connector Selection of the analog or digital inputs is made via the front panel display or control software AES3 Link A latching XLR3M connector is fitted adjacent to the AES3 input connector This is paralleled to the input connector to provide an unprocessed AES3 loop thru to feed further PLMs or other equipment An AES3 110 ohm termination load is enabled by default when the PLM is the last unit connected within an AES3 daisy chained system The termination may be disabled if desired via the front panel menu and within the Lake Controller software 4 2 2 Output Connectors The PLM is available with a choice of connectors for power outputs binding posts or Neutrik speakON Both connection methods allow for Bridge Mode operation which is activated from the Lake Controller software Please refer to the Lake Controller Operation Manual and section 8 1 1 of this Operation Manual for further information on Bridge Mode
63. als using a simple passive splitter Splitters provide a convenient and low cost solution when only one additional signal is required and in situations where cable lengths are short Attenuation is minimal but there is no refreshing of the signal 10 6 5 Additional Reference Material Complete technical information on the AES EBU AES3 standard can be downloaded from the AES web site at http www aes org publications standards 94 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Application Guide 10 7 Digital Clock Configuration 10 71 Digital Clock Overview In order to provide a flexible and robust audio processing system the device is equipped with a configurable digital clocking system The digital clock can generate various independent internal sample rates or can sync to an incoming AESS signal Figure 10 7 shows the various sample rates and options available INPUTS OUTPUTS AUTO MANUAL 48 SAMPLE RATE CONVERTER CLOCK 2 kHz 176 4 kHz Figure 10 7 Digital Clocking System In Figure 10 7 each circled C represents a choice point A choice point is a user interface control that can be configured using the Lake Controller software Please refer to the Lake Controller Operation Manual for further information Figure 10 7 indicates internally generated clocks with base rate multiples of 44 1 kHz or 48 kHz This should not be confused with the internal DSP sample rate of 96 kHz The PLM
64. an Ethernet control network which may include other Lake Processors and the Lake Controller software Network connection permits full control of all functions along with real time metering from a remote position This device supports the Dante audio networking protocol which allows transmission of multichannel high definition digital audio over the same Ethernet connection Use the primary connector when using a star network topology consisting of individual Cat be connections between the devices and an Ethernet switch Alternatively this connection can be used to daisy chain directly to another Lake Processor The daisy chain topology should not be used with Dante For a technical reference of the Ethernet Port please refer to section 8 4 Additional information is also available in the Lake Network Configuration Guide LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 13 Product Overview The Ethernet ports operate at the Ethernet data rate of 100 Mbps and allow straight or crossed network cables Two LEDs above each port Eid indicate valid network connection LINK and network activity ACT Secondary Connector The secondary network connector can be used to daisy chain multiple LM amp PLM Series and legacy Dolby and Lake devices Alternatively a Dante dual network topology can be created by connecting all secondary network connectors to a separate Ethernet switch ensuring full redundancy in the event of a network compon
65. and also on the Status and History tabs in the Lake Controller 7 11 8 3 Estimated of Cabinets When SpeakerSafe is active this submenu displays the estimated number of cabinets from SpeakerSafe s continuous load monitoring LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 61 Front Panel Interface 7 11 9 Dante MENU DANTE Menu Dante ENABLE Analog 1 MUTE Dante Tx METER Figure 7 22 Dante Menu Pressing the DANTE button from the main menu will display this screen only if Dante has previously been enabled via the Lake Controller software Please refer to the Lake Controller Operation Manual for further details regarding Dante implementation 62 PiMsSeries Operation Manual Rev 1 3 0 LAB GRUPPEN Back Panel Interface 8 Back Panel Interface An overview of the back panel interface is provided in section 4 2 This chapter describes each cluster of connections as shown in Figure 8 1 reuse A nig WITH 50 0 eR s ITI 00133844 V44 08 Figure 8 1 Back Panel Interface 2 channel PLM 8 1 Speaker Outputs The PLM is available with either 4 mm binding posts or Neutrik speakON connectors for the outputs The outputs of the PLM can produce a high voltage Do not connect or disconnect loudspeaker s while the PLM is powered on Never operate the PLM with any portion of bare loudspeaker wire exposed For speakON connector versions do not use mating plugs without the rear covers in
66. apability of the device ensure there is sufficient headroom in the signal path to avoid clipping before the limiters engage It must be possible to achieve enough gain through the device to engage the limiters and realize a high average SPL As an optimal setting allow for a headroom of 10 dB or more for all channels the simplest way to accomplish this is to increase the Module input gain 10 4 2 Minimize Noise To help provide the best volume to noise ratio use an AES or Dante digital input signal wherever possible If using analog inputs ensure that unused or unnecessarily high headroom is not introduced at the input to the device If full or high average power is not required the Module input gain may be reduced 10 4 3 Gain Optimization Examples This section provides examples on performance effects resulting from changes to the PLM gain structure 10 4 3 1 Digital Input Gain Structure Examples Figure 10 2 illustrates the recommended configuration of the PLM when using an AES or Dante digital input 88 PiMseries Operation Manual Rev 1 3 0 LAB GRUPPEN Application Guide Input Clip dBFS Amp Gain 35 dB SNR 114 2 dB Absolute Noise Floor 71 3 dBu dB dBu 100 0 Clip Nominal 100 0 Noise 150 0 200 0 250 0 Figure 10 2 Digital Input Low Noise with Good Headroom High Input High SPL Figure 10 3 illustrates how to achieve the lowest possible output noise altho
67. atching XLR3F connections The Link outputs on XLR3M connectors are directly paralleled to the inputs ANALOG WITH ISO FLOAT T ES CHUTE POS SEG Figure 8 11 Analog Input and Link XLR Connections the source s output stage e g mixing console may be limited Generally it is inadvisable not to parallel link more than four inputs If more links are required usea good quality balanced audio line driver or distribution amplifier A When linking analog inputs of several PLMs consider that the drive capability of 2 v 8 2 2 Analog amp AES3 XLR Wiring and Pin Out All XLR connections are wired to IEC268 as shown in Figure 8 12 68 PiMseries Operation Manual Rev 1 3 0 LAB GRUPPEN Back Panel Interface Figure 8 12 IEC268 XLR Wiring and Pin Out Pin 1 Ground Shield Pin 2 Hot Pin 3 Cold 8 2 3 Unbalanced Operation Balanced connections are recommended where possible However if it is necessary to drive the device from equipment with an unbalanced output wire the inputs as shown in Figure 8 13 Unbalanced Output Balanced Input Typically phono XLR Figure 8 13 Balanced to Unbalanced Analog Wiring and Pin Out The method shown in Figure 8 13 uses twin and screen balanced cable and standard XLR pin connections at the PLM Series device end with the cold wire and the cable screen connected to the signal ground of the equipment at the source end This usually provides better noise and hum rejectio
68. ation Manual Rev 1 3 0 LAB GRUPPEN Front Panel Interface Output limiter gain reduction meters take 24 into account the sum of PLM ISVPL and Lake LimiterMax The icons in the center of the LCD indicate the amplifier channel to which each module output is routed When two amplifier channels are Bridged both channels will be displayed The type of icon used in the center of the screen O confirms whether the PLM outputs are configured in Standard mode or Bridge Mode as shown in Figure 7 5 For further information on Bridge Mode please refer to section 8 1 1 1 STANDARD Figure 7 5 Standard and Bridge Mode Front Panel Icons Bridge Mode is visible via this icon notation on the PLM Front Panel in Home View however the Lake Controller must be used to configure Bridge Mode please refer to the Lake Controller Operation Manual for further information Home View looks similar for most configurations with slight variations dependant on the PLM model and processor configuration 7 10 2 Module View Module View provides further signal level information in the form of additional power output meters as shown in Figure 7 6 MODULE METERS 200000 06 02 Figure 7 6 Meter Mode gt Module View Q Current View title amp Frame label Frame faults and warnings Module A label and input gain meter LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 43 Front Panel Interface
69. c function buttons to mute unmute the Module inputs Once the Module input is muted the LED turns red and MOD IN MUTE is displayed on the LCD When unmuted the LED turns green unless any other output warning conditions are active Fault condition LED indications take priority z over mute status indications If a fault condition occurs the LED will indicate the OU fault and not the mute status Module Input Mutes may also be controlled in Menu Mode See section 7 11 2 6 for further details Please refer to the Lake Controller User Manual for details of mute selection via the software 7 8 4 4 Module Output Mute Module Output Mute is part of the Lake Processing system at the crossover outputs It is post Module output EQ and level adjustment pre PLM s protection circuitry Muting of the Module outputs is unavailable via MUTE ENABLE in Meter Mode as the PLM power output mutes are assigned in this mode see section 7 8 4 5 However Module output mute status and control is available in Menu Mode and may also be viewed and controlled from the Lake Controller software Please refer to section 7 11 2 6 for details of selecting Module Output Mute in Menu Mode Refer to the Lake Controller User Manual for details of mute selection via the software 7 8 4 5 Power Output Mute The four dynamic function buttons to the right of the LCD control the Power Output Mutes of output channels 1 4 These mutes are located within the PLM s power
70. ches Backbone which in turn support smaller lower speed local networks The term backbone is used to describe such a trunk Bandwidth The bandwidth of a signal channel or interconnection is the range of frequencies it is able to handle The term can be applied to both audio channels and Ethernet networks BEL Available on PLM 200000 devices only the Breaker Emulation Limiter BEL provides functionality to emulate a breaker with user adjustable characteristics Breaker A breaker in relation to BEL configuration is a virtual fuse providing three breaker emulation settings Conservative Fast amp Universal Cat 5e Cat 6 etc Designations of industry standard cables suitable for Ethernet networks using four twisted pairs of conductors Often referred to as UTP cable Unscreened Twisted Pair Cat 5 has generally been replaced by Cat 5e e enhanced Either Cat 5e or Cat 6 cable are suitable for networking Lake and Lab gruppen devices An Ethernet network comprising several devices interconnected using the Secondary connectors to daisy chain the units together is an Chain example of a network with a chain topology Digital audio is produced by sampling analog audio at a known fixed rate controlled by some form of master clock Problems can occur Clock when interconnecting two pieces of digital audio equipment if their internal master clocks are not synchronized Various techniques may be employed to ensure
71. cted loudspeakers or any PLM components DC present at the output will cause the PLM s power output module breaker to blow In this instance a red LED will illuminate and NEEDS SERVICE will display on the LCD The power output channel modules are independent of the input voltage Both 115 and 230 V models have amp channel fuses This is not a user servicable fault condition and the unit should be returned for repair 5 3 10 VHF Protection The PLM includes protection circuits that detect Very High Frequency VHF content in the input signal The detection is frequency dependent initiated from 10 kHz upwards If VHF signals are detected above the threshold the output will mute for approximately 6 seconds before a further measurement is taken When continuous VHF signal stops the output unmutes and the amplifier returns to normal operation This protection system recognizes that continuous VHF signals at high levels do not appear in speech or music Any such content can therefore be considered as a fault condition VHF protection is essential to avoid damage to HF drivers 22 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Operation and Performance VHF protection is dependent on a combination of output power level and frequency Figure 5 2 shows a decreasing power threshold from approximately 10 kHz upwards which illustrates increasing sensitivity of the protection system with frequency When continuous output power above the
72. cycle is required to complete this reset Soft Reset A Soft Reset will reset all settings and parameters to the original factory defined default values but retains Frame Preset information and IP Network configuration A power cycle is not required to complete this type of reset LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 57 Front Panel Interface 7 11 5 3 Breaker Emulation Limiter PLM 200000 ONLY MENU FRAME BEL CONF The Breaker Emulation Limiter BEL provides Ampere selection 5 32 A and breaker type selection CON SERVATIVE FAST and UNIVERSAL Select by pressing the adjacent button then use the rotary encoder to change the parameter This option is only available on the PLM 200000 7 11 5 4 Network MENU FRAME NETWORK Pressing the NETWORK button displays a further screen containing network configuration information All parameters are view only on the front panel and are either not editable or can only be adjusted via the Lake Controller A summary at the top right of the screen confirms whether a valid connection is present for both Ethernet ports and whether the Lake Controller is online gt IP Addr Displays the Internet Protocol address for the selected unit and can only be changed via the Lake Controller software Please refer to the Lake Controller Operation Manual for further details gt Mask Displays the IP address subnet mask for the selected unit and can only be changed via the
73. d even if operation is momentarily in excess of max ratings Table 9 4 PLM 100000 Current Draw amp Thermal Dissipation LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 81 Appendix 9 5 Glossary of Terms Acronyms and Abbreviations The explanations given in Table 9 5 below are based on the specific use of each term in this manual The definitions are not intended to be exhaustive and many of these terms have wider meanings Term 100 1000 Base T Description 100 1000 Base T is IT industry speak for different standards of Ethernet network This term incorporates 100 Base TX which operates at 100 Mbps and 1000 Base T which operates at 1000 Mbps 1 Gbps Access Point See Wireless Access Point Auto Sensing The Ethernet ports automatically determine the base speed of the network they are connected to 10 Base T or 100 Base T and configure themselves appropriately This is termed auto sensing Auto Uplink The Ethernet ports can operate with either straight or crossed network cables the ability to connect correctly with either type is termed auto uplinking Auxiliary Output Some of the configurations possible in the Lake processing system Modules result in a single audio processing channel being created in addition to a crossover This is termed an Auxiliary output Large Ethernet networks are often implemented with a very high speed trunk part of the network topology feeding main swit
74. d due to high amplifier channel temperature the amp channel temperature limiter is active FAULT Frame Fault Audio Mog ME Em An internal audio fault has arisen and the ES needs servicing E BEL ACTIVE AEN dd Breaker Emulation Limiter present as the nominal current reached Improve the power distribution and adjust the BEL settings CAL ACTIVE Ensures that the PLM s power output stages are not overloaded This should never happen during normal program material 200000 NO AC Frame fault Check AC Mains Fault The PSU received unstable mains check the mains configuration CLOCK SLIPPING AES Clock slipping Warning The AES or Dante clock is slipping verify clock selection generator This will cause high THD on signal and if Dante is running will result in an unstable signal distribution OFFLINE The is longer able to communi with the Lake Controller AN CLIP CIR PLM s power output stage current has exceeded the fixed safe maximum and the Current Peak Limiter has become active to limit it INPUT CLIP The input signal level is too high and is causing clipping at the input stage LASB GRUPPEN PLM Series Operation Manual Rev 1 3 0 73 Appendix Displayed Text Event Log Text Category Description INPUT MUTE Input Mute Mute The audio signal has been muted at the input router of the Lake Processor LM PREC LOW Speakersafe precision low War
75. drop faster than when two channels are delivering maximum power solid blue line and two channels are delivering half power solid orange line This is termed asymmetric loading the rail voltage for this is indicated by the dotted blue line It can be seen that higher power output is available for 25 ms bursts with asymmetric loading 5 3 Amplifier and Load Protection Systems The PLM is equipped with a comprehensive set of protection circuits If operating conditions become suf ficiently extreme that any of these circuits become active indication is provided by LEDs in one or more soft function buttons 5 8 together with adjacent warning text In addition to this notification is also presented within the Lake Controller software and within system log files 5 3 1 Inter Sample Voltage Peak Limiter ISVPL The ISVPL is a high quality voltage limiter that can deliver seamless limitation to any desired level Its ensures that the voltage at the output terminals never exceeds the defined threshold It operates on these principles gt The signal is delayed slightly to allow the ISVPL to look ahead and reduce the gain before voltage in excess of the threshold can appear at the output This results in zero voltage overshoot at the output with a rounded limitation up to the threshold gt amplitude of the output signal between digital samples is predicted which permits the ISVPL to respond to analog peaks that may occur at the digit
76. e 230 V or 115 V versions available Not selectable on the product All specifications are subject to change without notice LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 97 Warranty and Support 12 Warranty and Support 12 1 General This product is manufactured by Lab gruppen and it is warranted to be free from any defects caused by components or factory workmanship under normal use and service for a period of three 3 years from date of purchase from an authorized Lake dealer If the product fails to perform as specified during the warranty period Lab gruppen will undertake to repair or at its option replace this product at no charge to its owner provided the unit is returned undamaged shipping prepaid to an authorized service facility or to the factory This warranty shall be null and void if the product is subjected to repair work or alteration by a person other than those authorized by us mechanical damage including shipping accidents war civil insurrection misuse abuse operation with incorrect AC voltage incorrect connections or accessories operation with faulty associated equipment or exposure to inclement weather conditions Damage due to normal wear and tear is not covered by the warranty Units on which the serial number has been removed or defaced will not be eligible for warranty service Lab gruppen shall not be responsible for any incidental or consequential damages Lab gruppen s responsi bi
77. e of the polarized or d alimentation restera ais ment fonctionnelle grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or 1 2 Standards he third prong is provided for your safety If the provided plug does not fit into your outlet consult an electrician for 1 replacement of the obsolete outlet This equipment conforms to the require 10 Protect the power cord from being walked on or pinched men ue eue particularly at plugs convenience receptacles and the point anad die D where they exit from the apparatus Directive 2006 99 EC 11 Only use attachments accessories specified by the manufacturer Standards applied EMC Emission EN55103 1 12 Useonly with a cart stand tripod bracket or table specified Uae by the manufacturer or sold with the apparatus When a EMC Nee E3 with S N cart is used use caution when moving the cart apparatus below 1 at normalloperationileveli combination to avoid injury from tip over Electrical Safety EN60065 Class Is wid de storia Or when WERTE This equipment is tested and listed accord 14 Refer all servicing to qualified service personnel Servicing K e ET is required when the apparatus has been damaged in any C22 2 NO 60065 Intertek made the tests way such as power supply cord or plug is damaged liquid and they
78. e using the rotary encoder The current settings are also displayed on the front panel I O STATUS screen The analog inputs utilize Iso Float transformerless electronic balancing circuitry This provides electrical isola tion from an analog source comparable to that achieved with transformer based designs However pin 1 of the XLR input connector may be connected to ground within the device if desired This option is selected by using the rotary encoder to toggle between FLOATING and GROUNDED It may be necessary to change this setting to resolve ground loop problems when using analog inputs 7 11 4 Attenuation Submenu MENU gt ATTENUATION Menu Attenuation MUTE ENABLE METER Select Al Figure 7 16 Attenuation Menu The default setting of 0 00 aB i e no attenuation is adjustable in 0 25 dB increments down to 100 dB Adjustment of attenuation at the input to the PLM power stage is available on a per channel basis This adjustment is the PLM equivalent of a conventional amplifier level control The power output channels may be turned down using these parameters before powering on or off Please refer to the signal flow diagram in on page 26 By default all channels are deselected Press the SEL ALL button to select deselect all channels as shown in Figure 7 16 or press a single button on the right to adjust a channel individually For 4 channel PLMs only ONE channel or ALL 24 channels be adjusted It is not p
79. ee service If the LCD or front panel display requires cleaning use a soft cloth only do not use solvent cleaners The dust filters on both sides of the front panel behind the grilles should occasionally be removed and cleaned to ensure maximum airflow through the device Disconnect the unit from mains power prior to removing dust the filter and ensure the dust filter is replace prior to turning the unit back on Do not use sharp or metal objects to remove the dust filter and be careful that the implement used to remove the filter does not enter the device In extreme cases it may be necessary to clean the inside of the device This procedure should only be carried out by qualified service personnel This may be necessary if the device has had prolonged operation in an extreme environment such as one where cracked oil smoke machines are in use If the device is used in extreme conditions it is recommended to have it serviced every three years as a preventative measure 9 3 Factory Default Settings 9 3 1 Module Defaults Module Type 2 x 2 Aux Mod Input Mute On Mod Output Mutes Off Gain dB unity Delay 0 ms Polarity Positive In phase MaxRMS 20 dB MaxPeak 21 dB Amp Gain 35 dB ISVPL 153 V PLM 100000 193 V PLM 14000 194V PLM 200000 Input amp Output EQ Flat LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 11 Appendix 9 3 2 Input and Router Defaults Autoselect On Input sensitivity
80. ense is involved and potential failure of the distribution amplifier itself is introduced 10 6 3 3 Cable Types and Distance Limitations All digital connections should be made with 100 ohm balanced cables wired according to the AES3 standard see Figure 8 11 on page 68 Although standard analog microphone cabling may function in limited circumstances the potential for problems is greatly increased AES3 contains a high speed data stream and requires an effective bandwidth of up to 12 MHz far beyond the 20 kHz required for analog audio LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 93 Application Guide The distance allowed between a signal source and the PLM is dependent on both cable quality and the sampling rate used At a 96 kHz sampling rate any good quality AES3 cable should allow a cable run of 100 meters with no data losses beyond the capability of internal error correction The best cables may allow longer cable runs though careful trials are recommended before use in the field Sampling rate also governs allowed cable length a 100 meter length at 96 kHz might extend to 200 meters at 48 kHz but be cut to 50 meters at 192 kHz 10 6 3 4 Signal Degradation and Loss A weak or degraded AES3 signal will exhibit no audible loss of quality as long as the robustness of the data stream remains above the threshold required for internal error correction As degradation approaches the threshold audible artifacts may be heard incl
81. ent failure Additional processor configuration is required for a z dual redundant network setup See the Lake ZAaN Controller Operation Manual for further details NOTE For a technical reference of the Ethernet Port please refer to section 8 4 Additional information is also available in the Lake Network Configuration Guide When connecting multiple devices to an Ethernet z network care must be taken NOT to create a EPN closed loop which causes network malfunction NOTE Mains Power Connector The mains power AC input is via a Neutrik powerCON connector rated at 32 A The power supply must be connected to AC mains using a power cable with a correctly wired plug for the country of operation 14 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Operation and Performance 5 Operation and Performance This chapter provides comprehensive information on PLM Series connection setup operation and perfor mance The detailed information included here is essential to realizing the full functionality of the PLM Series devices 5 1 Operation Precautions Make sure that the Standby button on the PLM s front panel is either unlit OFF or red STANDBY before making any input or output connections Ensure the AC voltage matches that printed on the label adjacent to the mains connector Ensure no input signal is present when powering on the PLM to reduce the risk of any inadvertent bursts of high level audio 5 2
82. erSafe monitoring was not started EMP FLT CH Temp Fault Amp Channel Fault Temperature in the power output stage exceeds safety limit EMP FLT DSP Temp Fault DSP Area Fault The temperature of the PLM s process ing circuitry has exceeded its safety limit Audio is not muted but continued operation at this temperature is not recommended TEMP FLT MAG LASB GRUPPEN Temp Fault Speaker Magnet PLM Series Operation Manual Rev 1 3 0 The temperature of the speaker magnet estimated by SpeakerSafe has exceeded the manufacturers recommended maximum 75 Appendix Displayed Text Event Log Text Category Description TEMP FLT PSU Temp Fault Power Supply Unit Fault The temperature of the PLM s PSU has exceeded its safety limit TEMP FLT VC Temp Fault Speaker Voice Coil Fault The temperature of the speaker voice coil estimated by SpeakerSafe has exceeded the manufacturers recom mended maximum TEMP WARN PSU Temp warning Power Supply Unit Warning High temperature in the Power Supply Unit TEMP WARN CH Temp Warning Amp Channel Warning High temperature in the power output stage TEMP WARN MAG Temp Warning Speaker Magnet Warning The temperature of the speaker magnet is high estimated by SpeakerSafe TEMP WARN VC Temp Warning Speaker Voice Coil Warning The temperature of the speaker
83. ers for simultaneous editing even if the values are different on each channel Turning the rotary encoder will adjust each parameter by the same increment When in Meter Mode the rotary encoder allows the user to change between the available meter views Some menus permit parameters to be adjusted 24 across multiple channels simultaneously by default NOTE 78 4 Dynamic Function Buttons The buttons surrounding the display are unlabeled because their functions change according to the currently selected menu or display In Meter Mode with MUTE ENABLE activated these dynamic function buttons are used to mute or unmute the Module Inputs and power output channels In Menu Mode these buttons are used to navigate the menu structure During menu navigation the color of the embedded LEDs continue to indicate the mute status or clips faults and warnings relevant to the associated input or output channel on the PLM LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 35 Front Panel Interface Each button contains a tricolor LED which conveys BR fault and warning indications in addition to the mute status The LED color does necessarily NOTE correspond to the currently selected function 7 8 4 1 Mute Functions The PLM provides mute functions at several different points in its audio chain Please refer to section 6 1 for further information The four types of mute are 1 PLM Input Mute 2 Module Input Mute 3 Module
84. fused with peak to peak voltage written V pk pk which V peak x 2 Vrms The RMS voltage of a signal See RMS Wireless Access Point A device used to connect a computer to an Ethernet network without cables a radio transmitter receiver for data Wireless Network An Ethernet network where some or all cabled connections are replaced by wireless links Table 9 5 Glossary of Terms Acronyms and Abbreviations 84 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN 10 Application Guide Application Guide This chapter describes the practical application and use of PLM Series devices 10 1 Rack I O Panels For fast and simple system connection pre wired racks using connection panels can be used With an connector panel fitted to the front of the rack all audio loudspeaker network and power cables can be plugged in at one position without requiring rear panel access Although rental companies and large system users may have existing preferred designs Figure 10 1 provides a suggested layout This example provides AES3 and analog audio connections a separate panel would be used for Ethernet connections gt E 1 2 5 o 3 4 o O o ae o o 3 4 o3 AES EBU ANALOG INPUTS O C 1 2 INPUT 1 2 5 Te INPUT 1 am m me 4 LE Bee Oo Qo o FUN oP oN of METTI uero AS 4 y V SN a ered peus o
85. gure 8 9 2 channel PLM Binding Post Configuration n N SPEAKER OUTPUTS I I CH 1 2 2 5 CH 1 CH2 m m E CLASS 3 WIRING Figure 8 10 2 channel PLM Binding Post Configuration Bridge Mode LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 67 Back Panel Interface Connect the loudspeaker terminals to the red binding posts and the terminals to the black binding posts There are three methods of connecting speaker cables to the binding posts 1 Solder 4 mm banana plugs to the ends of the speaker wires and plug into the center of the turrets 2 Thread the stripped ends of the wires through the holes in the posts Enter the wires for output channels 1 and 3 from above and for channels 2 and 4 from below Tighten the plastic turrets by finger only being careful not to overtighten 3 Crimp 4 mm insulated spade terminals onto the ends of the wires and push into the binding post assembly from above Ch 1 amp 3 or below Ch 2 amp 4 The hole in the post is ignored Hand tighten plastic turrets being careful not to overtighten 8 2 Analog Inputs and Outputs 8 21 Analog Input and Link XLR Connections Two electronically balanced analog inputs are provided via l
86. h four pairs of black and red 4 mm binding posts 4 channel PLMs provide the output for one power output channel on each pair of binding posts as shown in Figure 8 7 66 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN O O SPEAKER OUTPUTS I T I CH 1 a CH3 0 o 5 CH2 CH4 I x a CLASS 3 WIRING A Figure 8 7 Binding Post Configuration for 4 channel PLM CH 1 5 SPEAKER OUTPUTS I zu re CH3 CH2 C3 o 5 zl OC O CLASS 3 WIRING d A Back Panel Interface Figure 8 8 Binding Post Configuration for 4 channel PLM Bridge Mode 2 channel PLMs provide each power output channel from two pairs of binding posts as shown in Figure 8 9 i N SPEAKER OUTPUTS T T 1 1 CH2 0 o 4 CH 1 CH2 I m I CLASS 3 WIRING EG Fi
87. he digital to analog and analog to digital conversion process Therefore using digital inputs normally provides higher quality audio with lower latency Two types of digital audio inputs are available Dante networked multi channel digital audio and 2 channel digital audio via the AES3 Dante based system configurations and interconnections are explained in a separate document the Lake Network Configuration Guide The information in this section is supplied for users unfamiliar with AES3 Users already familiar with AES3 will find that the device conforms to established conventions 10 6 1 AES3 Digital Audio The original AES EBU digital audio interface standard was developed by the Audio Engineering Society in conjunction with the European Broadcast Union Originally published in 1985 it was revised in 1992 and 2003 and in its current iteration it is properly designated the AES3 standard AES3 is a serial transmission format for linearly represented uncompressed digital audio data It describes a method for carrying two channels of periodically sampled and uniformly quantized audio signals on a single twisted pair cable The data format allows for auxiliary data which can be used for information on signal characteristics as well as the sampled audio data The physical interconnection as defined by IEC 60958 Type I specifies three conductor 110 ohm twisted pair cabling terminated by an XLR connector Please refer to section 8 3 for wiring
88. heck if the affected unit complies with the EMC limits for immunity CE labeled If not address the problem with the manufacturer or supplier All electrical products sold in the EC must be approved for immunity against electromagnetic fields high voltage flashes and radio interference gt Consult the dealer or an experienced radio TV technician for help 17 User Responsibility 171 Mains Connection Grounding Your apparatus must be connected to a grounded socket outlet 1 72 Speaker Output Hazard on Amplifiers Amplifiers are capable of producing hazardous output voltages To avoid electrical shock do not touch any exposed speaker wiring while the amplifier is operating The external wiring connected to the speaker terminals shall be installed by a qualified person or ready made leads or cords of appropriate capacity shall be used As the power output channels on amplifiers produce high voltage do not connect or disconnect speaker cables when the mains power is on 1 43 Speaker Damage Amplifier apparatus is very powerful and can be potentially dangerous to both loudspeakers and humans alike Many loudspeakers can be easily damaged or destroyed by overpowering them Always check the speaker s continuous and peak power capabilities Although the amplifiers attenuators can be used to reduce the overall gain an increase of the input signal can result in full output power which may cause damage to connected speakers 1 7 4
89. instantaneous peak voltage not the RMS value of the output signal The actual value is displayed in brackets and can be limited by the maximum voltage a particular PLM Series model can produce Inter Sample Voltage Peak Limiter Profile ISVPL Profile Selecting the ISVPL Profile will optimize the ISVPL limiting for the specific frequency band ISVPL Profile permits individual adjustments per channel between six profiles providing appropriate attack and release times for the ISVPL Limiter and Voltage Clip feedback to either minimize distortion or maximize SPL as described below 1 Universal Optimized for low distortion usable for all frequencies 2 Sub LF Optimized for higher SPL below 600 Hz usable for all frequencies 3 Sub Optimized for high SPL 20 200 Hz 4 LF Optimized for high SPL 20 1200 Hz 5 MF Optimized for high SPL 300 6000 Hz 6 HF Optimized for high SPL 1 kHz 50 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Front Panel Interface The default ISVPL Profiles differ depending on the PLM Series model gt 100000 200000 UNIVERSAL gt PLM 14000 SUB LF MaxPeak Level MaxPeakLvl This sets the maximum peak signal level at the Module outputs It is adjustable from 30 dBu to 30 dBu in 0 1 dB increments subject to user defined level limits The Group total is displayed in brackets for each channel MaxRMS Level MaxRMSLvl This sets the maximum RMS signal level at the Modu
90. ks each with two PLMs and a 32 A single phase mains supply The 32 A capacity is shared between the two PLMs within the rack This is beneficial as the two PLMs don t have to draw the same current The only limitation is that in combination they don t draw over 32 A Three racks each with two PLMs and a 16 A three phase mains supply This requires central power distribution to be configured as two 3 x 16 A circuits from 3 x 32 A One phase is used for each PLM within the rack This has the benefit that each PLM has its own breaker but they all have to operate within the same limit of 16 A therefore more care must be taken to ensure that no breaker blows if different loads are used y The 230 V version of the PLM is equipped with a v slow blow 30 A ceramic breaker 10 2 2 Six PLM Series Devices with 100 120 V Mains Supply If the mains supply is 115 V and the system requirement is 6 PLMs then the mains capacity would need to be able to supply two 3 x 30 A circuits There are two methods of achieving this Two racks each with three 230 V version PLMs and a 30 A three phase mains supply In the rack the PLMs are connected between the phases i e one between phase 1 and 2 one between phase 2 and 3 and the last between phase 3 and 1 Each 30 A mains breaker is shared between two PLMs and the mains current is to some extent canceled This has the benefit that the three PLMs don t have to draw the same current one can be allowed to draw a li
91. l 2 0 IES ee __ 4 AAN A MA C Fw Figure 10 1 Example I O Connector Panel 10 2 Power Distribution For professional applications it is recommended that the sum of the available mains power is above 3000 W per PLM e g 230 V x 16 A 120 V x 32 A As PLM 200000 devices are equipped with BEL the cur rent draw of the device can be configured to perfectly match the power distribution PLM 100000 and PLM 14000 are equipped with PAL so the power supply will limit its mains current draw both momentary current draw and current draw over time to be less than 28 A for the 230 V version and less than 53 A for the 115 V version Safety approved equipment is not required to have a mains breaker as long as this does not pose any fire hazard under fault conditions as is the case with the PLM Please see the following examples suggesting power distribution methods across multiple PLM devices All of the examples given will work although the first examples for both 230 V and 115 V operation have a slight advantage due to their power sharing ability LAB GRUPPEN 85 PLM Series Operation Manual Rev 1 3 0 Application Guide 10 2 1 Six PLM Series Devices with 230 240 V Mains Supply If the mains supply is 230 V and the system requirement is six PLMs then the mains capacity would need to be able to provide 3 x 32 A There are two methods of achieving this 2 Three rac
92. le outputs It is adjustable from 30 dBu to 30 dBu in 0 1 dB increments subject to user defined level limits The Group total is displayed in brackets for each channel MaxRMS Corner MaxRMSCor A soft knee or hard knee corner may be applied to the RMS Limiter A soft knee corner gently increases limiting as the signal approaches the threshold a hard knee corner applies full limiting to any signal exceed ing the threshold by any amount but none to signals below the threshold The Corner parameter is adjustable in 0 1 dB increments subject to defined level limits This figure repre sents the level below the limiter threshold at which compression commences the larger this negative value the softer the knee A setting of 0 dB implies a hard knee characteristic LimiterMax provides peak and RMS limiting features referred to as MaxPeak and MaxRMS respectively Full details regarding LimiterMax can DeU found in the Lake Controller Operation Manual 7 11 2 6 Mutes MENU MODULE MUTES In Meter Mode Module inputs and PLM power output channels can be muted using the MUTE ENABLE function The MUTE menu also provides mute status and control of the Module input mutes but instead of the PLM power output channel mutes it provides the ability to mute the Lake Module outputs Press the associated dynamic function button s to select the Module input s and or Module output s to be adjusted Use the rotary encoder to toggle between
93. lip 12 dBu gt Amp Gain 30 9 dB gt SNR 111 3 dB gt A Absolute Noise Floor 68 4 dBu 80 0 60 0 40 0 20 0 0 0 4 Clip 5 7700 Norrinal Ms Noise 60 0 80 0 100 0 120 0 140 0 Analog AES Input Input Mixer Module In Module Out Amp Attenuation Analog Ref Amp Gain ISVPL Output Figure 10 5 Analog Low Noise with Full Output Power Low Input High SPL 90 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Application Guide Figure 10 6 illustrates how moderate noise with extreme SPL can be achieved SPL is extremely high in this example as maximum headroom is available at the input and within the processing stage This makes it possible to increase the average SPL by utilizing internal compression capabilities gt Input Clip dBFS gt Amp Gain 35 dB gt SNR 114 2 dB gt Absolute Noise Floor 71 3 dBu 60 0 40 0 20 0 0 0 4 Clip 20 0 40 0 60 0 Noise 80 0 100 0 120 0 140 0 Nominal dB dBu Analog AES Input Input Mixer Module In Module Out Amp Attenuation Analog Ref Amp Gain ISVPL Output Figure 10 6 Analog Input Moderate Noise with Very High Output Very High SPL 10 5 Speaker Configurations Connecting two speakers in parallel to a PLM power output presents a load to the amplifier which is half the impedance of
94. lity is limited to the product itself Lab gruppen takes no responsibility for any loss due to cancellation of any events or rent of replacement equipment or costs due to a third party s or customer s loss of profit or any other indirect cost or losses however incurred Lab gruppen reserves the right to make changes or improvements in design or manufacturing without assuming any obligation to change or improve products previously manufactured This warranty is exclusive and no other warranty is expressed or implied This warranty does not affect the customer s statutory rights 12 2 International Warranties Please contact your supplier or distributor for this information as rights and disclaimers may vary from country to country 12 3 Technical Assistance and Service 12 3 1 International Service If your Lab gruppen product requires repair contact your Lab gruppen dealer or distributor or contact Lab gruppen by fax or email to obtain the location of the nearest authorized service centre 98 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Warranty and Support 12 3 2 Factory Service In the event a Lab gruppen product requires factory service you may contact Lab gruppen s service depart ment for return instructions and a Return Authorization number Please note for product return 1 Use the original packing 2 Include a copy of the sales receipt your name return address phone and fax number email address a
95. lters IIR such as the classic Bessel Butterworth or Linkwitz Riley types these are available with slopes ranging from 6 dB octave to 48 dB octave gt Finite Impulse Response filters FIR providing zero phase shift with steep transition slopes at the crossover frequencies These are also referred to as Linear Phase Crossovers Further details on these types of crossovers and information on configuring various module types can be found in the Lake Controller Operation Manual 6 6 Files and Presets The Lake system provides various methods for storing and recalling Module Frame or system wide data An overview is provided below for further information please refer to the Lake Controller Operation Manual 6 61 Module System and Sub System Configuration Files Module System and Sub System Configuration files are stored on the Lake Controller PC and data is passed across the network when recalling or storing these type of files gt A Module file is the smallest set of data that can be stored and recalled it contains crossover gain delay and limiter information for an individual loudspeaker i e the data shown in red in the signal flow diagrams in section 6 1 A Module file may be recalled into other Lake devices It is not possible to store a Module File directly on the hardware device gt System or Sub System Configuration File contains a set of Module file information in addition to Frame related information such Group da
96. mming NOTE 78 2 Frame Faults and Warnings LED This LED turns red to indicate a Frame fault and turns yellow to indicate a Frame warning Additional clari fication of the fault or warning is displayed in the LCD All mute fault and warning states displayed on the front panel are summarized in section 9 1 34 Series Operation Manual Rev 1 3 0 LAB GRUPPEN Front Panel Interface Additional faults and warnings are reported in the Event Log of the Lake Controller only All faults and warnings recorded in the Event Log are listed in section 9 1 along with scenarios that may have arisen to cause them 78 3 Rotary Encoder Q The rotary encoder is used to adjust parameters in conjunction with the selection made via the dynamic function buttons and LCD menus The ring around the rotary encoder illuminates when a selected parameter is available for adjustment Turn the encoder clockwise to increase the selected parameter or counter clockwise to decrease the value Parameters with only two states e g ON OFF are toggled by turning clockwise or counter clockwise Some parameters enable simultaneous adjustment of a combination of input and output channels To select which channels are adjusted 1 Press the associated soft button s to select the parameter s for editing A selected parameter is indicated by inverse text and background color 2 Use the rotary encoder to change the value It is possible to select multiple paramet
97. n of this condition is shown on the output LEDs 5 3 8 Temperature Protection 5 3 8 1 Overview PLM Series devices are equipped with a sophisticated temperature sensing system that provides protection from overheating which may occur as a result of inadequate ventilation or excessive power output Thermal measurements are made at several points within each power output channel along with measure ments in the power supply and DSP areas If temperature in any area reaches a critical level then a warning is displayed and gain reduction is applied If the temperature continues to increase and reaches a dangerous level then a fault is displayed and audio is muted Each power output channel the power supply and DSP area have separate indications For all temperature faults temperature monitoring will continue at 0 5 second intervals with the output remaining muted When the area has cooled below the dangerous threshold the fault condition is cleared and audio is restored 5 3 8 2 Power Output Channels A power output channel temperature warning or fault is indicated in one of the front panels LEDs in the right hand soft function buttons gt A warning is indicated by a static yellow LED and adjacent warning message TEMP WARN CH gt A fault is indicated with a static red LED and adjacent warning message TEMP FLT CH An event report is sent to the Lake Controller software for both the warning and the fault If a temperature fault conditi
98. n than the more common method of joining pins 1 and 3 together in the XLR However if only a single core unbalanced cable is available the method shown in Figure 8 14 may be used SCRN Unbalanced Output Balanced Input Typically phono XLR Figure 8 14 Unbalanced Analog Wiring and Pin Out LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 69 Back Panel Interface 8 2 4 Iso Float Electronic Balancing The analog input electronic balancing circuits use the Lake Iso Float system The Iso Float technology combines the benefits of transformer coupled isolation with the advantages of clean direct coupled inputs The audio converters are galvanically isolated and not connected to the main ground High quality transformers and opto isolators create a barrier between the device and possible grounding aberrations from the outside electrical environment Iso Float settings are adjustable via the front panel menu or the Lake Controller software 8 3 AES3 Digital I O 8 31 AES3 XLR Connector AES3 digital audio input is an XLR3F connector which is directly paralleled to the adjacent XLR3M AES3 Link connector Wiring of this connector follows the same standard as for analog XLR connections as shown section 8 2 2 p Figure 8 15 AES3 XLR Input and Link Connectors Figure 8 12 on page 69 shows the only possible method of wiring there is no equivalent of an unbalanced connection in the digital domain The A
99. nd description of the defect 3 Mark the Return Authorization number on the outside of the packing 4 Ship the product prepaid to Lab gruppen Faktorvagen 1 SE 434 37 Kungsbacka SWEDEN Phone 46 300 56 28 00 Fax 46 300 56 28 99 service labgruppen com www labgruppen com 12 4 Trademarks Intercooler Class TD and Lake are national and or international registered trademarks of Lab gruppen AB PLM Powered Loudspeaker Management R SMPS LoadLibrary LoadSmart SpeakerSafe ISVPL BEL UVL and CAL are trademarks of Lab gruppen AB Dolby is a registered trademark of Dolby Laboratories Raised Cosine Equalization LimiterMax and Iso Float are trademarks of Dolby Laboratories Audinate is a registered trademark of Audinate Pty Ltd Dante and Zen are trademarks of Audinate Pty Ltd All other trademarks remain the property of their respective owners Copyright 2012 Lab gruppen AB All rights reserved LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 99 LAB GRUPPEN PLM 20000Q 100 240V 2400 2950W 50 60Hz CONFORMS 7 ANSI UL STD 60065 I zs CE 622 2 60065 2028051 1 Must be grounded earthed Made in Sweden LAB GRUPPEN LAB GRUPPEN AB SWEDEN INTERNATIONAL CONTACT gt INFOGLABGRUPPEN COM US amp CANADA CONTACT gt INFOG TCG AMERICAS COM WWW LABGRUPPEN COM
100. nents inside the PLM Fit solid blanks not ventilation blanks to unused A rack spaces to ensure effective air circulation EPN Leaving gaps in between items of equipment NOTE degrades the effectiveness of forced air cooling If installing one or more PLM Series devices in a rack with other fan cooled equipment be sure that all the other equipment also uses front to rear airflow for cooling If this precaution is not observed there is a risk of overheating as units with the reverse airflow will be drawing in air which has already been heated by the PLMs 3 3 2 Temperature Sensing and Protection The PLM is equipped with a sophisticated temperature sensing system which protects it from any overheat ing which may occur as a result of inadequate ventilation Always ensure the dust filters behind the detach z able front panel are clean to ensure maximum 220 possible airflow 3 4 Operating Voltage The label adjacent to the mains AC input connector indicates the AC mains voltage for which the device is wired and approved The PLM 100000 and PLM 14000 devices are available in separate 115 V and 230 V versions the PLM 200000 is only available with a universal power supply operating from 80 to 265 V Only connect the mains cable AC cord to an AC source of the voltage shown on the label 6 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Installation The PLM uses primary switching which means the mains power is
101. ning A SpeakerSafe warning indicating insuf ficient data to produce reliable results This may occur for example if a channel is being driven at a very low level LOAD NOT VER LoadSmart Load Not Verified Warning A Module containing a Fingerprint has been loaded but the load is yet to be verified with LoadSmart 200000 NS lt 65 V Frame fault PSU mains lt 65 V Fault Mains input voltage is below 65 Volts RMS 200000 NS gt 270 V Frame fault PSU mains gt 270 V Fault Mains input voltage is above 270 Volts RMS 200000 NS gt 400 VPK Frame fault PSU mains gt 400 VPK Fault Mains input voltage is above 400 Volts Peak 200000 NS GLITCH Glitch on mains voltage detected Warning A glitch missing cycles on mains input was detected D IN MUTE Module Input Mute Mute The audio signal has been muted at the Module input of the Lake processor D OUT MUTE Module Output Mute Mute The audio signal has been muted in the output stage of the Lake processor DULE CLIP n a Clip The signal level on the outputs of the Lake processing module is too high and is clipping LoadSmart Verification LoadSmart load verification is in progress n a Sound Source Changed The input router has changed sound source 200000 NEED SERVICE 1 Frame fault Need Servi Service required contact your dealer
102. nnel 7 11 8 2 LoadSmart Verification Select this option to initiate LoadSmart verification then select YES to continue LoadSmart performs a rapid test of all output channels and displays the results on the LCD a few seconds later 60 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Front Panel Interface Temp Measure Figure 7 21 LoadSmart Verification Results Screen The Load Results page provides four items of information per output channel gt Confirmation of the speaker Fingerprint assigned to the channel If no Fingerprint is assigned NO MODEL will be displayed gt Result of speaker cabinet count this will either be OK or WRONG gt Estimated number of speakers connected to the channel gt Computed voice coil temperature calculated from manufacturer s data contained within the loud speaker Fingerprint If the displayed range of voice coil temperatures is acceptable press ACCEPT TEMP MEASURE button to start SpeakerSafe monitoring using these temperatures as starting values If the range of displayed voicecoil temperatures contains one or more anomalous results the Lake Controller should be used to manually enter the starting temperature for SpeakerSafe Please refer to the PLM Series chapter in the Lake Controller Operation Manual for further information Once started SpeakerSafe monitors the load on each power output channel and displays associated results in Meter Mode Temperature View
103. np Mi INPUT MUTE Input Mute AL Internal Audio Interface Fault Frame AUDIO FAULT Frame Fault Audio Interface ALL Module Input Mute Modu e MOD IN MUTE Module Input Mute ALL Module Output Clip Modu e MOD CLIP n a AL Module Output Mute Chann el MOD OUT MUTE Module Output Mute AL No input source available Modu e NO INPUT No Input Source AL No Load Detected at Output Chann el Channel Fault No Load Detected AL Physical Input Clip e NPUT CLIP n a ALL Power Average Limiter Frame PAL ACTIVE n a ALL Power Channel Failure Chann el SERVICE CH Channel Fault Unit Needs Service ALL PSU Area Temp Fault Frame TEMP FLT PSU Temp Fault Power Supply Unit ALL PSU Fault Undervoltage Frame PSU FAULT Frame Fault PSU Undervoltage 200000 PSU Mains Over Voltage Peak Frame MAINS gt 400 VPK Frame Fault PSU Mains 400 VPK 200000 PSU Mains Over Voltage RMS Frame MAINS 2270 V Frame Fault PSU Mains 270 V 200000 PSU Mains Under Voltage Frame MAINS lt 65 V Frame Fault PSU Mains lt 65 V 200000 PSU Needs Service 1 Frame NEED SERVICE 1 Frame Fault Need Service 1 200000 PSU Needs Service 2 Frame NEED SERVICE 2 Frame Fault Need Servi 200000
104. nput View Pressing the METER button Q scrolls through these views Pressing the METER button when in Menu Mode will return the system to Meter Mode with the Home View displayed Please refer to section for further information 7 6 Menu Button Menu Mode is selected by pressing the MENU button The screen displays the top level menu with various Submenu options Press the button adjacent to the required submenu to select it Pressing the MENU button while in Menu Mode will display the previous menu level Menu Mode is used for processor configuration or for editing a parameter Please refer to section 7 11 for further details LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 33 Front Panel Interface 77 Exit Button In Menu Mode pressing the EXIT button returns back one menu level In Meter Mode pressing EXIT returns the display to the Home View 78 Dynamic Buttons Controls and LEDs MUTE ENABLE METER MENU PLM 20000Q Figure 7 3 LCD with Dynamic Buttons Controls and LEDs 781 Communication LED This bright white LED signifies selection in the Lake Controller or Controller communication providing visual confirmation of 1 Network communication between the Lake Controller and the Lake Processor Flashing LED 2 Selection of the Lake Processor in the Lake Controller software Steady LED The Communication LED can be dimmed via the BX front panel by selecting Frame menu and then Front Di
105. offset may be applied to AES3 digital input signals in 0 1 dB increments from 100 dB to 415 dB LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 53 Front Panel Interface 7 11 3 2 AES3 Input Termination MENU gt I O CONFIG gt AES TERM MUTE ENABLE METER Figure 7 14 AES Termination Edit Screen To adjust the AES3 Input Termination select AES TERM from the Input Config menu then use the rotary encoder to toggle the value An icon is displayed in the bottom left of the display in Meter Mode when AES is set to Terminated For fault free operation when using AES3 digital audio as an input source inputs must be correctly termi nated with the characteristic impedance of 110 ohm The Input Termination setting is determined by the method used to distribute the AES3 signals The processor at the end of a distribution line should be set to TERMINATED all other processors should be set to UNTERMINATED If an AES3 distribution amplifier DA is being used to distribute the digital audio signals with one DA output per processor then all terminations should be on However if the AES3 is daisy chained only terminate the last processor in the chain 7 11 3 3 Iso Float MENU gt I O CONFIG gt ISO FLOAT Menu Input Cfg ls0 Float MUTE ENABLE METER Figure 7 15 Iso Float Menu 54 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Front Panel Interface To change the Iso Float setting adjust the valu
106. on 4 2 for additional information 8 5 Power Inlet 8 5 1 Power Connector A Neutrik NAC3 Series powerCON connector rated at 32 A is fitted to the rear of the PLM for AC mains input The power cable AC cord supplied with the PLM has the mating connector ready fitted but may require a mains AC plug specific to your country to be fitted to the other end The wiring an pinout details are shown in Table 8 5 powerCON 230 115 V Pin Version Version 5 we Table 8 5 powerCON Connector Wiring and 12 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Appendix 9 Appendix 9 1 Faults and Warnings Overview Fault or warning conditions are indicated by the LED shown in Figure 7 3 on page 34 and also by LEDs associ ated with the inputs and outputs on the PLM As the LEDs indicate several types of faults or warnings a brief textual description of the fault or warning is provided on the LCD display Section 7 8 2 on page 34 details the fault and warning indications that appear on the front panel Table 9 1 lists the events that may have triggered each fault or warning condition AMP CH MUTE Amp Channel Mute Mute The audio signal has been muted in the power output stage Frame Fault Analog Input Fault The analog input signal is corrupt due FAULT to DC on the analog input or there is an issue with the internal A D converter 200000 ATL ACTIVE Warning The output power is limite
107. on arises on a power channel the output of that channel will be muted LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 21 Operation and Performance 5 3 8 3 Power Supply DSP A power supply PSU or DSP temperature warning or fault is indicated by the LED in the top left function button gt A warning is indicated by a static yellow LED and adjacent warning message TEMP WARN PSU or TEMP WARN DSP gt A fault is indicated with a static red LED and adjacent warning message TEMP FLT PSU or TEMP FLT DSP An event report is sent to the Lake Controller software for both the warning and the fault If a temperature fault condition arises in the power supply the output of all channels will be muted If a temperature fault condition arises in DSP area audio will not be muted but continued operation is not recommended 5 3 8 4 PLM 200000 For the PLM 200000 a temperature dependant limiting feature is also present At temperatures above the critical warning level and below the dangerous fault level the ISVPL threshold is slowly reduced to decrease the output power and cool down the device This enables the device to continue to pass audio although with a reduced amplitude in extreme conditions If reducing the ISVPL threshold does not cool down the device a temp fault will still be issued when the dangerous temperature level is reached 5 3 9 DC Protection DC protection is implemented on each power output to prevent damage to conne
108. orm other system housekeeping and control functions System Preset A class of Preset within the Lake Processing system System Presets allow Module or Frame configurations and settings to be stored for the entire network of LM 26 Processors PLM Series and other legacy Lake devices Tablet PC A compact PC which uses a touchscreen instead of keyboard and mouse The Lake Controller has been optimized for use on Tablet PCs inati AES3 digital audio interconnections must be correctly terminated for reliable operation The 110 ohm terminations must be set on at the ermination beginning and end of a set of daisy chained digital audio equipment and off at any intermediate ones T A mathematical word for arrangement or configuration The topology of a network is a means of visualizing the overall configuration opology of the network Universal Power Supply A power supply that operates in all countries without the need for manual adjustment as long as the voltage falls within the specified range for the device VHF Protection VHF protection is another amplifier safety circuit developed by Lab gruppen The presence of continuous HF audio can easily damage loudspeakers so the protection circuit monitors the output this muting the power output channel if necessary V peak Indicates the peak voltage of an audio signal For a sinusoidal signal the peak voltage 1 414 x the RMS voltage Vrms Not to be con
109. osine Equalization linear phase crossovers and LimiterMax loudspeaker protection The Super Module feature allows hardware processing modules in two or more separate devices to function as a single module in the Lake Controller software Please refer to the Lake Controller Operation Manual for further information 2 2 4 Analyzer Plug In Lake Controller software provides integration with third party real time analyzers providing simultaneous measurement display and EO adjustment via the Lake Controller Approved analyzers include Rational Acoustics Smaart 7 and WaveCapture Live Capture Light or Live Capture Pro additional third party analyz ers may be approved in the future Please refer to the Lake Controller Operation Manual for further information regarding the Analyzer plug in and associated functionality 2 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Welcome 2 2 5 Dante Audio Network PLM Series devices include Dante digital audio networking as standard Utilizing the latest advances in Ethernet technology Dante offers simplified system configuration and extremely low latency while deliver ing very high quality uncompressed digital audio across the Lake network The Zen automatic configuration feature enables plug and play setup without third party DHCP or DNS servers Dante is compatible with high bandwidth networks allowing large numbers of audio channels to be distributed alongside control and analyzer data
110. ossible to adjust only two or three channels LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 55 Front Panel Interface 7 11 5 Frame Submenu MENU FRAME Menu Frame BEL Conf MUTE n Network ENABLE F METER Frame Info Lat Match Frame Rst Front Figure 7 17 Frame Menu The Frame Menu provides information and options relating to the device PLM as a physical unit It is referred to as a Frame for consistency with Lake Controller terminology The Frame Label as defined in the Lake Controller is displayed in this menu It is also displayed at the top left of the screen in Meter Mode Home View 7 11 5 1 Frame Info MENU gt FRAME gt FRAME INFO Frame Info provides information about the device settings and configuration All data in this front panel menu is read only some parameters are fixed some can be changed only via the Lake Controller software Firmware Version FW Version This option displays the version numbers for various firmware elements This information can be used to verify that the latest firmware is installed and is useful if a technical issue arises Inherent Latency Inh Latency This option displays a screen showing latency currently incurred through the PLM measured from input to output Processing of digital audio necessitates a small but finite processing delay referred to as system latency It may be desirable to know the latency so the value can be subtracted from an
111. prevent tripping of breakers Several PLMs can under normal conditions be powered up simultaneously If you do experience problems powering up multiple PLMs simultaneously they must either be turned on manually in an ordered manner or sequenced remotely using the Lake Controller software s Global Control feature Alternatively the capac ity of the mains supply should be increased If insufficient power is available to allow simultane z ous power up then there is probably insufficient capacity for full power output during operation It is recommended that additional capacity is added to the mains power distribution system 24 PiMsSeries Operation Manual Rev 1 3 0 LAB GRUPPEN Signal Flow and Lake Processing 6 Signal Flow and Lake Processing 6 1 Signal Flow The figures below depict the audio signal flow for a PLM Series device It is worth noting that this sophis ticated device provides seven points in the signal chain where the signal level can be adjusted muted or disconnected The blue sections represent Frame data and the red sections represent Module data please refer to the Lake Controller Operation Manual for further information Important information regarding correct setting of the gain structure can be found in section 10 3 l t AES Router 2 4 Dante X Mute Dante Y Analog 1 2 IAES 1 input AES 2 Dante X LE Dante Y Figure 6 1 Signal Flow Diagram PLM Se
112. profile is optimized for frequencies above 1 kHz Table 5 3 shows the theoretical maximum output power for a given load impedance and ISVPL setting An ISVPL to load calculator that will assist in generating the z appropriate ISVPL setting for a desired power load is available EPN at www labgruppen com plm NOTE MAX SINEWAVE BURST POWER Watts Load Impedance ohms ISVPL SETTING V peak N 7 Load Impedance ohms ISVPL SETTING V peak Es 76 ECS tT _ 1024 C TUNERC ET 872 Se O 732 458 se R 0 215 p m or 153 MEM Er EM Ts 45 EA Table 5 3 ISVPL to output examples These ratings shown in Table 5 3 are limited by the CPL Current Peak Limiter functions not by ISVPL settings due to power output channel current capacity r4 18 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Operation and Performance The ISVPL threshold may be set at any level between 17 8 V and 600 V via the PLM s menu system For further details please refer to section 7 11 2 5 of this manual and also to the PLM Series chapter in the Lake Controller User Manual PLM devices that have a smaller peak output voltage can still set the ISVPL threshold up to 600 V When a threshold is set above the maximum capability of a power output channel the maximum ISVPL for that product will be automatically set Therefore
113. r l entretien apersonnel qualifi 1 6 FCC Compliance Notice Radio Interference A sample of this product has been tested and complies with the limits for the European Electro Magnetic Compatibility EMC directive This equipment has also been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference from electrical equipment This product uses radio frequency energy and if not used or installed in accordance with these operating instructions may cause interference to other equipment such as radio receivers This Class A digital apparatus complies with Canadian ICES 003 Cet appareil num rique de la classe A est conforme la norme NMB 003 du Canada However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment on and off the user is encouraged to try to correct the interference by one or more of the following measures gt Reorient or relocate the antenna gt Increase the separation between the equipment and receiver PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Important Safety Instructions gt Connect the equipment to an outlet on a circuit different from that to which the receiver is connected gt C
114. r with real time performance monitoring See LoadLibrary kON An industrial quality loudspeaker connector manufactured by Neutrik 4 pole 2 speakers and 8 pole 4 speakers versions are fitted to spea various versions of the PLM Star Topology A network topology which uses a network switch to connect to individual Lake devices Each device connects to one port on the switch with its own cable thus the network looks like a star when drawn as a diagram with the switch at the centre Straight Network Cable A Cat 5 6 network cable with full pin to pin connections is called a straight network cable Lake devices can connect to a network using either straight or crossed network cables Subsystem Super Module It is possible when working with large networked systems to store selected components of the system into a Subsystem This is useful if working on a tour that encompasses both large and mid sized venues The same core Lake Controller data can then be used for a reduced number of Lake devices A Super Module is a virtual construct that can be realized within the Lake Controller allowing a set of Modules in different Frames to be treated as a single Module Switch Ethernet An Ethernet switch allows several Ethernet devices to be connected to a network using a star topology More intelligent than the earlier hubs which they now largely replace they route packets of data only to the units for which they are intended and also perf
115. rd loudspeaker presets Module files the Lake Controller also includes a set of enhanced Module files specifically for use with the PLM Series These supplementary PLM Module files known as the LoadLibrary incorporate both Lake DSP parameters along with PLM specific data LoadLibrary Module files include parameter settings for the PLM s Amplifier Gain and ISVPL limiter Additionally LoadLibrary loudspeaker types may also include data relating to the electrical characteristics of a particular loudspeaker Electrical characteristic data is used to enable load verification LoadSmart and monitoring facilities SpeakerSafe to be performed on the PLM This data set is termed a Fingerprint When a PLM specific loudspeaker type is loaded its Fingerprint load characteristics are included These load characteristics are stored in a file with a mal suffix and are loaded simultaneously with the module file LoadLibrary Modules and standard Module files are cross compatible although when a LoadLibrary Module is loaded into a legacy Lake product the extra data within it is ignored 6 4 3 Super Modules Super Modules allow control of multiple Modules of the same type distributed across multiple Frames as a single entity within the Lake Controller software A change made in the Super Module is replicated across all assigned Modules resulting in improved efficiency in system configuration and a reduction of on screen icons within the Lake Controller sof
116. rectified on the primary side of the transformer This makes the power supply insensitive to mains frequency variation and it will operate normally on line frequencies from 45 to 75 Hz If the mains plug AC plug fitted to the mains cable AC cord is not appropriate for your country it can be removed and a locally sourced one fitted instead observing the color coding in the table below powerCON Pin 230 V Version 115 V Version ah Green Yellow Table 3 1 AC Plug Configuration A If you are not 100 confident of your competence to replace the mains plug AC plug the task should be carried out by qualified personnel Once a suitable AC power supply is connected the device can be turned on using the front panel power button When the device is turned on the power button LED changes from red Standby to green Active In rush current is controlled and limited during the BR soft start sequence This enables multiple PLMs on aaa the same AC mains circuit to be turned on NOTE simultaneously 3 5 Grounding Analog inputs feature Iso Float ground isolation a technology which combines the benefits of transformer coupled isolation with the advantages of clean direct coupled inputs The audio converters are galvanically isolated and not connected to the main ground High speed transform ers and opto isolators create a barrier between the device and the outside electrical environment The Iso Float feature is activated by defa
117. ries Part 1 6 2 Level Adjustments amp Mute Points The numbers below correspond the points identified in Figure 6 1 and Figure 6 2 o Input Router Stage Input selection and MUTE Input Mixer Stage Router ON OFF connection to mixer and gain settings Module Input Stage Mute N A for LM Series Mesa Mode and gain settings LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 25 Signal Flow and Lake Processing Module Output Stage Mute and gain settings e Output Router Stage Output ON OFF routing connections Q Attenuation Stage Power output channel mute and attenuation settings Amp Gain Stage Amplifier gain control If the required audio signal is not passing correctly verify the connection mute and gain settings at all 52 seven stages 6 2 1 Power Output Section Limiting and Sensitivity The Current Peak Limiter CPL dynamically limits the drive to the power stage based on three parameters sensed output current level feedback from the output stage and sensed voltage clip from the ISVPL This ensures that power output is maintained within the design limits of the PLM The adjustable Inter Sample Voltage Peak Limiter ISVPL sets the PLM s maximum output voltage and therefore also the maximum output power The ISVPL setting is made via MENU MODULE LIMITERS gt ISVPL and can also be set from the Lake Controller software Attenuator Mute Phase Rev Attenuator Mute Phase Rev
118. riggered by excessively low output impedance possibly the result of too many loudspeaker cabinets connected in parallel 5 3 3 Power Average Limiter PAL 5 3 3 1 PLM 100000 and PLM 14000 The Power Average Limiter PAL controls the AC current into the power supply Power consumption is limited to the rated design parameters of the power supply ensuring that the PSU will never be overloaded Also high power products such as those in the PLM Series can potentially draw more current with output devices still within safe operating areas than is allowed by the external mains breaker The PAL protection feature can help prevent the supply s external breaker from tripping within time intervals of less than three minutes For longer time intervals it is the responsibility of the user to ensure that the average level of the audio is within limits that ensure that the breaker doesn t trip LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 19 Operation and Performance PAL activity is indicated by the LED within the first soft button adjacent to the display flashing red together with a PAL ACTIVE warning message displayed on the screen A warning is also displayed on the Lake Controller software 5 3 3 2 PLM 200000 The Power Average Limiter Active warning PAL Active will be displayed when the power supply s maxi mum rated design parameters are reached When this warning is displayed gain limiting is being applied to the signal and the I
119. roups of three decimal numbers between 0 and 255 In a system consisting of Lake Processors and a Lake Controller they are assigned and detected automatically IP Subnet Mask P subnet masks are required in all IP networks The subnet is determined by the size and type of network being used For small networks less than 254 addresses a subnet mask of 255 255 255 0 can be used A Class C network so Float is Lake s proprietary method of electronic balancing which provides a particularly high level of isolation and immunity from Iso Float ground loops SVPL is an abbreviation for Inter Sample Voltage Peak Limiter a proprietary Lab gruppen technique for ensuring that voltage at the ISVPL output terminals of a PLM does not exceed a pre determined level Eight ISVPL profiles provide the ability to configure for low distortion or high SPL specific to certain frequency ranges or for universal use Lake Controller The Lake Controller is the software application used to control LM 26 Processors PLM Series and other Lake devices This software application provides additional functionality and allows various grouping functions for simultaneous control of multiple Lake Processing enabled devices Latency The small but finite delay incurred by audio signals when they are transformed into the digital domain processed digitally and then converted back into analog signals In the Lake system latency is assured to be constant
120. s 8800 W 9600 W gt 10000 W into 4 4 6 6 ohms 0 0596 0 0496 gt 114 dB 2110 dB 0 05 dB gt 74 dB 20 Hz to 20 kHz 96 kHz 32 bit floating point 1 61 ms 1 68 ms 0 00003 96 20 Hz 20 kHz unweighted 2 inputs x 2 link 412 or 26 dBu PLM 14000 2 2 14000 W 193 V 90 A peak 1150W 2300W 4300 W 7000 W gt 7000 W into 1 8 2 1 ohms 8600 W 14000 W gt 14000 W into 3 6 4 2 ohm gt 114 dB gt 110 dB 0 00022 typical at 1 kHz unweighted at 26 dBu headroom setting 0 00033 typical at 20 Hz and 20 kHz unweighted at 26 dBu headroom setting 2 inputs x 2 link lt 24 bit 44 1 48 88 2 96 176 4 192 kHz 2 inputs 2 outputs 48 96 kHz Yes Yes 0 8 1 3 and 4 ms 100 17 8 194 V step size 0 1 V 67 A peak 33 Arms Yes Yes 22 44 dB step size 0 1 dB Inf to O dB step size 0 25 dB 2x3 pin XLR 4 x 3 pin XLR electronically balanced Neutrik speakON 1 x NLT8 2 x NLT4 or 4 Binding Posts pairs 2 RJ45 etherCON 17 8 193 V step size 0 1 V 90 A peak 44 Arms Neutrik speakON 2 x NLT4 or 4 Binding Posts pairs Via Ethernet for Lake Controller software or DLM the 3rd Party Protocol Neutrik powerCON 32 Three fans front to rear airflow temperature controlled speed 2 5 inch daylight readable LCD Two fans front to rear airflow temperature controlled speed RGB LEDs and detailed fault description on display 8 provided On Standb
121. s within the Lake processing system Up to 100 can be stored in the hardware device and each holds the complete configuration of all Modules and the Modules internal settings Gigabit Ethernet Describes the speed of Ethernet data transfer for devices that transmit Ethernet frames at a rate of a gigabit per second as defined by the IEEE 802 3 2008 standard Hub A type of network interface device with multiple Ethernet ports Data arriving at any port is sent to all others Hubs have been largely replaced by Switches In Rush Current When power is applied to a piece of electronic equipment the initial current taken by the PSU can be very high as the various capacitors in the circuitry charge up this is called the in rush current In the case of power amplifiers which contain numerous very large capacitors the in rush current can be enough to blow mains breakers The PLM s PSU contains circuitry to control the in rush current to prevent this The amplitude of an audio signal at the point where it is applied to the input of the device or at the input of an intermediate stage within Input Level it An analog input signal level will be expressed in dBu s while a digital input signal level in dBfS dBs below digital clip level fS ull scale Every item of equipment connected to an Ethernet network has a unique address called the IP address so that data gets to the correct IP Address place IP addresses are written as four g
122. t amp Field Reference Guide gt AC mains lead power cable with Neutrik powerCON connector gt Rear brackets for additional rack support pair along with associated mounting hardware gt Software Installer and Documentation CD ROM Please keep the original carton and associated packaging to facilitate shipping of the device should the need arise 3 2 Mounting Airflow for cooling the device is from front panel intake to rear panel exit Please ensure that no object such as rack doors or lids are placed at the front or rear of the rack to ensure that airflow is maximized This device has no top or bottom vents and therefore may be stacked directly on top of each other Sufficient space should be available at the front of the rack to accommodate the handles and at the rear to accommodate connectors and cables allowance must be made for cable or loom bends within a rack 3 21 Rear Mounting Two rear support brackets along with associated mounting hardware are included with the PLM as shown in Figure 3 1 itis recommended that these are used wherever possible Fit the brackets to the vertical rails at the rear of the rack Figure 3 2 and Figure 3 3 show the fitting options for fixed and removable installation The support brackets are reversible and may be fitted to point either to the front or rear of the rack the orientation used depends on the rack depth and position of the rear rack rails Two mounting methods are possible
123. t mode Priority 1 is checked for a valid input signal if no signal is found Priority 2 is checked and so on until a valid signal is located this process occurs if the currently selected input fails In Forced Selection mode one of the four priorities is fixed regardless of whether a valid signal is present With a router selected on the front panel press the middle button on the left of the LCD to activate this parameter for editing the text will be highlighted as shown in Figure 7 13 Use the illuminated rotary encoder to scroll through the following options gt Auto Select default gt Force Priority 1 gt Force Priority 2 gt Force Priority gt Force Priority 4 Assignment of Input Priority Factory default settings assign AES3 to Priority 1 and Analog to Priority 4 with Priority 2 and 3 empty To change these settings via the front panel select Priority slot number to be changed and use the rotary encoder to scroll through the available options Due to the signal hierarchy it is not possible to assign an analog source to a higher priority than a digital source Analog Input Sensitivity and Digital Gain Offset Press a dynamic function to the right of the LCD to toggle the selection of input source and input sensitivity digital gain offset then use the rotary encoder to change the parameter The maximum input level accepted by the analog input pre amplifiers without clipping may be set to 12 dBu or 26 dBu Digital gain
124. ta and I O configuration i e the data shown in blue in the signal flow diagrams in section 6 1 6 6 2 Frame and System Presets This device allows the complete processor configuration to be stored as a Frame Preset on the hardware unit itself Presets can be recalled via the front panel please refer to section 7 11 7 or via the Lake Controller software please refer to the Lake Controller Operation Manual Presets can be stored into the device using the Lake Controller or the LM Series Preset Manager utility A maximum of 100 Frame Presets can be stored on this device The data within a Frame Preset includes the configurations of both Modules in the Frame including all levels crossover EO input mixer output routing and all other Module Frame and Group parameters As Frame Presets are stored in the device complete processor configurations may be recalled without the need to connect the device to a PC LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 29 Signal Flow and Lake Processing Using the System Presets function in the Lake Controller entire system configurations can be stored and recalled across a network of LM amp PLM Series devices Dolby Lake Processors Mesa Quad EQ and the Contour Pro 26 This enables fast retrieval and switching of entire system configurations as minimal data is being sent between the Controller and Processors 30 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Front Panel Interface
125. th the power output channels Please note that the same LEDs also indicate the mute status of inputs left and outputs right Further information on faults and warnings is provided in section 7 8 5 and section 9 1 LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 31 Front Panel Interface 71 3 Selecting a Module in the Lake Controller software via the It is sometimes useful to identify which Module icon s in the Lake Controller software are associated with a particular hardware Frame To highlight the module in the Lake Controller software 1 Ensure Meter Mode is selected 2 Press the button adjacent to the Module description on the LCD If the Frame is online but the Module is not in the work area the selected Module will be centred on the Module scroll bar assuming the Modules Menu is selected in the Lake Controller 72 Front Panel Key Lock It is possible to lock the front panel buttons for security purposes When this function is active all front panel controls are disabled and all adjustment must be made via the network To lock controls press and hold button then simultaneously press button o as shown in Figure 7 2 repeat this process to unlock 1 Press Hold 5 MUTE METER 2 Press Figure 7 2 Locking Unlocking Front Panel Controls A key icon will appear at the top of the display 24 when the Front Panel is locked 32 Series Operation Manual Rev 1 3 0
126. the ISVPL threshold can be in at the Module for the speaker s maximum capability and the Module file remains cross compatible with all PLM Series devices 5 3 2 Current Peak Limiter CPL The output Current Peak Limiter CPL ensures that the power output section will not be damaged by forcing it to deliver current levels at the outputs that exceed the maximum current ratings of the output transistors The CPL keeps the output transistors within their Safe Operating Area SOA The CPL is non adjustable CPL activity is indicated on the power output channel LED embedded in the associated output channel s function button to the right of the LCD Activity on an affected channel results in a flashing red indication together with a CURRENT CLIP warning message displayed on the screen adjacent to the LED A warning is also displayed on the controlling PC via the network This condition indicates an attempt to draw excessive current at the output The output is attenuated until the output current falls below the maximum current rating Limiting is performed by the ISVPL limiter in conjunction with the selected ISVPL profile Please refer to the Technical Specifications in chapter 11 for further details regarding ratings If excessive current is indicated check the output cables and examine the AM loudspeaker If impedance appears normal you may rectify the condition by altering the ISVPL settings or lowering input levels CPL indication can be NOTE t
127. threshold line is detected VHF protection becomes active Trigger voltage Voltage Vrms Frequency kHz Figure 5 2 VHF Protection Frequency Sensitivity The attack time of the VHF protection circuitry also changes with frequency becoming shorter at higher frequencies This is shown in Figure 5 3 Full output voltage Time ms Frequency kHz Figure 5 3 VHF Protection Attack Time Variations The VHF protection circuit is NOT a limiter and does not alter the PLM s frequency response It is imple mented solely to detect continuous VHF content HF content of normal music or speech signals at peak levels will be passed in full Operation of the VHF protection circuits is indicated by one or more of the output channel LEDs in the right hand soft function buttons showing steady red The adjacent fault message will show VHF FAULT It is also reported as a fault via the control network LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 23 Operation and Performance 5 3 11 Short Circuit Protection A low impedance or short circuit at the power output terminals is detected when the output current is high Current Peak Limiter is active and simultaneously the peak output voltage is below a predetermined threshold 42 V with the PLM 100000 for example When this situation occurs the output stage is muted to protect it from damage Operation of the short circuit protection system is indicated by an output channel
128. tivity associated with all Lake Processors The internal Lake Processing includes programmable crossovers EQ dynamics and other functions and can be fully con trolled via the supplied Lake Controller software Additionally many functions can be controlled or accessed directly via the front panel The Lake Controller Operation Manual and Lake Network Configuration Guide are supplied on the accompa nying CD ROM and additional documentation is available from the Start Menu after software installation Visit http labgruppen com to download the latest software firmware and documentation for your devices 6 4 Modules and Frames 6 4 1 Overview A Frame represents one physical Lake Processor e g PLM 100000 A maximum of two Modules are contained within each Frame these are referred to as Module A and Module B The number of Modules shown in a given Frame is dependent upon the signal processing configuration of that Frame LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 27 Signal Flow and Lake Processing Each Module can be configured as a Classic Crossover Bessel Butterworth Linkwitz Riley as a Linear Phase Crossover or as multiple full bandwidth Auxiliary Outputs The default configuration for the PLM is 2 x 2 Auxiliary Output Modules providing a total of four Module outputs Please refer to the Lake Controller Operation Manual for further information 6 4 2 LoadLibrary and Fingerprints In addition to the standa
129. ttle more than the other two The only limitation is that in combination they don t draw over 30 A Two racks each with three 115 V version PLMs and a 30 A three phase mains supply One phase is used for each PLM within the rack This has the benefit that each PLM has its own breaker but they all have to operate within the same limit of 30 A therefore more care must be taken to ensure that no breaker blows if different loads are used 10 3 Gain Structure The PLM Series architecture provides gain adjustments at various points in the signal path and therefore various places for muting and level adjustment Each mute or gain adjustment point serves a different purpose The signal flow diagrams in chapter 6 provide a useful reference for the signal path The following sections describe the various adjustment points all of which are available via the Lake Controller software 86 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Application Guide 10 3 1 Input Headroom Analog Inputs Only Input Headroom should be set to 12 dBu if the source can be limited to 12 dBu otherwise it should be set to 26 dBu This setting does not affect the other gain stages or the overall noise floor it allows control of the appropriate headroom at the input stage only To adjust navigate I O CONFIG gt INPUT CONFIGURATION in the Lake Controller Please refer to the Lake Controller Operation Manual for further details 10 3 2 Input Mixer
130. tware The key benefit of this feature is the ability to connect and control crossovers levels and EQ across multiple hardware devices simultaneously from the Lake Controller For example one device may be driving sub and low frequency speakers while another device controls mid range and hi frequency drivers Using a single adjustment the crossover points between the two devices can be changed simultaneously Please refer to the Lake Controller Operation Manual for further information regarding Super Modules 6 5 Loudspeaker Processor Overview The Lake Processing system within PLM Series devices may be configured with up to two processing Modules containing a total of up to six processing Module outputs although the number of power outputs will be either two or four depending on the PLM model being used To make use of the extra processing channels multiple hardware devices may be connected together using the Super Module feature as sum marized in section 6 4 3 28 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Signal Flow and Lake Processing Each set of processing elements is referred to as a Module and can be configured as crossovers full bandwidth auxiliary outputs or a combination of the two The relationship between inputs and outputs is defined via the Lake Controller or via the front panel Input Config Menu The Lake Processing system provides two distinct categories of crossovers gt nfinite Impulse Response fi
131. twork which is fully operational and communicating with the rest of the network is said to be online LAB GRUPPEN 83 PLM Series Operation Manual Rev 1 3 0 Appendix Term Description An abbreviation for Power Average Limiter PAL is proprietary Lab gruppen circuit which provides additional amplifier protection The PAL PAL ensures that the power drawn by the PSU from the AC mains does not exceed the mains breaker ratings Parallel Two or more e g inputs which are wired together so that all inputs are connected to the same source are said to be paralleled Signal levels will be reduced if too many inputs are paralleled in the case of AES3 this may result in a complete loss of audio Parameter Any control function which can be adjusted by the user to one of several different values is termed a parameter For example input level gain delay and limiter threshold are all parameters Pass Through Cable See Straight network cable PFC Power Factor Correction PFC reduces current peaks on the lines and reduces the requirements placed on the mains distribution system Ping Preset Ping is a term coined by the IT industry to the procedure of sending a command over a network to a particular Ethernet device asking it to confirm its identity and possibly reply with additional information Thus an Lake device on the network can be pinged from the Lake Controller on receipt of the ping the hi intensit
132. ucture A distribution amplifier usually abbreviated to DA is an audio buffer stage usually with zero gain with one input and several outputs Mono stereo and AESS digital versions can be obtained Use of a DA to feed a signal to several destinations ensures correct impedance matching and isolation between source and destinations Dual Network Topology A network topology consisting of two usually identical networks one connecting to the Primary Ethernet ports and the other to the Secondary ports Although more complex to implement the advantage of using a dual network system is one of greatly improved reliability as one complete network remains operational if the other should fail Dynamic Function Buttons Electronic Balancing The eight buttons around the front panel display are termed dynamic function buttons because their function varies depending upon which display page is currently on screen In the analog domain balanced inputs and outputs may be provided on audio equipment either by the use of transformers or via electronic balancing circuits The details of any fault or warning conditions which arise in the device during operation are recorded in a data file created by the Lake Event Log Controller software called the Event Log Fault A Fault in the device occurs when one of the operating parameters exceeds pre determined safety levels or when a condition is au detected that otherwise seriousl
133. uding pops clicks and momentary dropouts Any such indications require immediate attention as often the window of acceptable data loss between artifacts and complete audio loss can be very narrow As a precautionary measure four touring applications it is advisable to configure all digital audio wiring prior to use It is recommended that all cables be tested for error free performance at lengths 2096 to 2596 greater than lengths to be used in the field in order to provide a comfortable margin of safety 10 6 4 External Signal Distribution Hardware 10 6 4 1 Distribution Amplifiers Dedicated distribution amplifiers for AES3 signals are available from several manufacturers The most com mon format is one input and six outputs Digital distribution amplifiers are designed to refresh or reconstruct the signal as well making up for line losses One type of distribution amplifier is a simple repeater which restores the waveform shape and brings the signal amplitude back up the required level Some distribution amplifiers also offer a re clocking feature which also re times the signal to prevent signal degradation from clocking errors known as jitter Distribution amplifiers that offer re clocking often make the feature optional as using re clocking can intro duce small additional amounts of latency so should not be used unless necessary 10 6 4 2 Passive splitters In some limited applications a single AES3 input may be split into two sign
134. ugh this is not a recommended configuration gt Input Clip dBFS Amp Gain 22 dB SNR 114 8 dB Absolute Noise Floor 71 9 dBu dB dBu 100 0 Clip Nominal 100 0 Noise 150 0 200 0 250 0 Figure 10 3 Digital Input Optimized for Minimum Noise Not Recommended The improvement in noise performance at the cost of losing headroom and compression features is only 0 6 dB it is therefore not recommended to optimize performance in this manner LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 89 Application Guide 10 4 3 2 Analog Input Gain Structure Examples Figure 10 4 illustrates how to minimize absolute noise while limiting the available SPL Input Clip 12 dBu gt Amp Gain 22 dB gt SNR 105 5 dB gt Absolute Noise Floor 71 5 dBu gt SPLis limited to 8 9 dB relative to clip in this minimum absolute noise level example 60 0 40 0 20 0 0 0 4 3 200 Clip a 5 40 0 Nominal 5 600 Noise 80 0 100 0 120 0 lo NES 140 0 Analog AES Input Input Mixer Module In Module Out Amp Attenuation Analog Ref Amp Gain ISVPL Output Figure 10 4 Analog Low Noise with Limited Output Low Input Low SPL Figure 10 5 illustrates how to minimize absolute noise while achieving full power In this illustration it can be seen that there is no available headroom gt Input C
135. ult but z may be disabled via the Lake Controller software EN or via the front panel menu Use correctly shielded balanced audio input connections to minimise hum and interference Please refer to section 8 2 4 for further information NEVER disconnect the earth ground pin on the mains cable AC power cord LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 7 Product Overview 4 Product Overview This chapter provides an overview of key features and functionality For further information please see chapters 5 to 10 of this Operation Manual 4 1 Front Panel Overview LAB GRUPPEN PLM 20000Q Figure 4 1 Front Panel Overview The front panel controls are clustered around a daylight readable LCD e allowing adjustment and monitor ing of the majority parameters and meters The two clusters of controls on either side of the LCD include five dedicated function buttons O 9 O 9 eight dynamic function buttons with embedded LEDs and a rotary data encoder Handles Two sturdy cast aluminium handles integrated into the front panel The handles should be used when carrying the device and when fitting into or removing from a rack Ensure that any door or removable rack front cover has sufficient depth to clear the handles O Dust Filters Two dust filters are fitted behind metal covers To remove the covers loosen the thumbscrews located behind the handles Once detached the dust filter
136. uts Input sensitivity settings THD Noise AES EBU inputs Inputs Supported resolutions Supported sample rates Dante Audio Network Inputs and outputs Supported sample rates Supports redundant paths Flexible topology Network latency Device presets Local memory locations for the settings of the product Limiters Adjustable Inter Sample Voltage Peak Limiter ISVPL Current Peak Limiter 300 ms Current Average Limiter CAL 300 ms LimiterMax rms and peak limiters MaxRMS rms voltage limiter MaxPeak peak voltage limiter Gain Amplifier gain Output attenuator Rear panel interface AES EBU I O input link Analog 2 channel I O input link Output connectors Auto 10 100 Auto Uplink Control and monitoring interface Detachable mains cord Cooling Front panel user interface Display Fault Warning Limit Clip indicators Mute and soft function buttons Standby Power button Mute Enable button Meter button Menu button Rotary Encoder Exit button Power Operating voltage 45 66 Hz Soft start Inrush Current Draw Power Average Limiter PAL Power Factor Correction PFC Breaker Emulation Limiter BEL software controlled 5 32 A UnderVoltage Limiter UVL Dimensions Rack rail to rear panel Overall depth including handles and rear support Weight Finish Approvals PLM 200000 2 4 20000 W 194V 67 A peak 1150 W 2300 W 4400 W 4800 W gt 5000 W into 2 2 3 3 ohm
137. voice coil is high estimated by SpeakerSafe UNCERTAIN KOJAD Uncertain About Load Type Warning When speaker Fingerprints are taken a tolerance band is also defined to take into account production variations If LoadSmart results lie in this band a Load uncertainty warning results The user should re check the load and if all appears to be correct it is likely that normal operation will result UNDER SPKR CNT Under Speaker Count Warning A higher load impedance has been measured than was predicted by the Load Library for the assigned speaker type 20000Q UVL ACTIVE Warning The Under Voltage limiter is active as the mains supply has fallen between 65 and 80 Volts Output power is descreased to ensure mains distribution does not sag VHF FAULT Channel Fault Very High Frequency An exceptionally high level of continuous HF has been detected at the PLM s power output stage VOLTAGE CLIP n a The peak voltage at the output terminals has exceeded the user defined safe maximum WRONG LOAD Load Type Routing Mismatch LoadSmart is measuring load charac teristics which differ from those of the assigned speaker type Table 9 1 Warning Fault and Mute Indications alphabetical by LCD Text Event Log Text 76 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Appendix 9 2 Mlaintenance During normal operation this devices provides trouble fr
138. with the various configuration and control options Thank you again for placing your confidence in Lab gruppen products 2 2 Main Features The PLM Series incorporates a number of sophisticated technologies to ensure the best possible perfor mance and many years of reliable operation The following section summarizes the benefits of each feature additional information is available in the reference manuals 2 2 1 Amplifier Platform The PLM Series power output section has expanded upon Lab gruppen s robust road proven FP Series amplifiers Features in common with the FP Series include extraordinary power density patented Class TD output stages Regulated Switch Mode Power Supply R SMPS the high efficiency Intercooler copper finned cooling system and a full suite of protection features Signal inputs are analog AES digital and Dante digital audio network loop through outputs or redundant pairs are provided for each input type Please refer to section 5 3 for further information 2 2 2 Amplifier DSP Digital Signal Processor Various features of PLM Series devices are controlled by the on board DSP some of which are summarized in this section LAB GRUPPEN PLM Series Operation Manual Rev 1 3 0 1 Welcome 2 2 2 1 Input Gain Sensitivity Input gain sensitivity is set in the digital domain for PLM Series devices and may be controlled via the Lake Controller software or front panel interface 2 2 2 2 ISVPL
139. y Enables muting of outputs and inputs via soft button keypad Toggles through meter views Provides a menu driven interface for full function front panel control Yes Provides a back function Universal power supply 70 265 V Yes max 8 A Yes Yes Yes selectable breaker profile Yes W 483 mm 19 H 88 mm 2 U D 424 mm 16 7 498 mm 19 6 17 kg 37 Ibs 140 265 V 70 135 V 9 Yes max 5 A Yes No No No W 483 mm 19 D 386 mm 15 2 460 mm 18 1 88 mm 2 U 13 5 kg 30 Ibs Black painted steel chassis with black painted steel aluminum front CE ANSI UL 60065 ETL CSA C22 2 NO 60065 FCC PLM 100000 2 4 10800 W 153V 49 A peak 660 W 1300W 2300W 2350W 22700 W into 2 4 3 2 ohms 4600 W 4700W 25400 W into 4 8 6 2 ohms 2116 dB gt 112 dB 17 8 153 V step size 0 1 V 49 A peak 25 Arms Neutrik speakON 1 x NLT8 2 x NLT4 or 4 Binding Posts pairs Two fans front to rear airflow temperature controlled speed 140 265 V 70 135 V 9 Yes max 5 A Yes No No No W 483 mm 19 H 88 mm 2 U D 386 mm 15 2 460 mm 18 1 13 5 kg Ibs Note 1 Asymmetrical loading of the outputs will yield even higher ratings If one or two channel s has reduced power requirements then the voltage drop from the power supply will be reduced resulting in higher power availability for the other channel s Note 2 Separat
140. y affects the performance Some fault conditions may result in one or all of the channels being muted Fingerprint The Lake Controller comes includes a LoadLibrary consisting of data describing the electrical characteristics of commonly used gerp loudspeakers The file for each speaker type is termed its Fingerprint FIR Filter Finite Impuse Response Filter An alternative design of crossover filter realisable in the digital domain providing linear phase characteristics FIR filtering is provided in all Lake devices 82 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Appendix Term Descripti An analog balanced input or output is said to be floating when full electrical isolation exists between that input or output and the Floati equipment connected to it Transformer coupled inputs and outputs are inherently floating Electronically balanced inputs and outputs oaung can never be truly floating though better designs such as that found in the PLM do mimic the characteristics of transformer coupled designs to a high degree Frame Lake terminology for a physical unit containing a Lake processing system i e a single LM 26 PLM or legacy Lake Processor Frame ID An electronic identification label which can be given to each Frame in an amplification system Naming Frames in a large system is desirable as it simplifies identification in the Lake Controller Frame Preset Frame Presets are a class of Preset
141. y deliberate delay introduced for loudspeaker time alignment In many cases the system latency is so small compared to time alignment delay that it can be ignored 56 PLM Series Operation Manual Rev 1 3 0 LAB GRUPPEN Front Panel Interface Serial Number Serial No The printed serial number on the back panel of the PLM is also electronically embedded in the hardware and therefore cannot be removed or altered if stolen Max Output Voltage MaxOutVolt Displays the maximum output voltage per channel that can exist across the PLM s output terminals This is the absolute maximum not the voltage defined by the ISVPL setting When Bridge Mode is activated double the channel output voltage is available Max Output Current MaxOutCurr Displays the maximum output current that can be delivered by the PLM summed across all output chan nels 7 11 5 2 Frame Reset and Configuration MENU FRAME RESET Use this option to display a further menu with options to reset all parameters back to their original factory default values See section 9 3 for a full list of the default factory reset parameter values Two types of reset are provided Factory Reset Soft Reset Factory Reset A Factory Reset will reset all settings and parameters to the original factory defined default values This includes the deletion of any Frame Presets stored within the device It also resets the IP Address and all network related settings a hard power
142. y white LED on the front panel illuminates Reverse pinging is also possible whereby the ping is instigated from Lake hardware device and a visual identification of the processor registers in the Lake Controller software A complete frame configuration that is stored in the device hardware Primary Ethernet Port The Primary Ethernet port on the is the means of connecting the device to a network See also Secondary Ethernet Port Abbreviation of Power Supply Unit The PSU in any item of electronic equipment converts the AC mains into a set of internal DC voltages PSU which run the electronic assemblies themselves RJ45 RJ45 connections are the industry standard connectors for Ethernet ports Router As far as networks of the type discussed in this manual are concerned see Switch Secondary Ethernet Port The Secondary Ethernet port can be used either as a daisy chain output repeating the network connection at the Primary port or for the connection of a separate second network for full redundancy Short Circuit Protection A Lab gruppen proprietary protective circuit designed to mute a channel when a short circuit is detected at its output terminals to prevent damage to the device Once activated SpeakerSafe constantly monitors the voltage and current at the PLM s outputs Using Fingerprint data the software SpeakerSafe then calculates parameters such as voice coil and magnet temperatures providing the operato

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