LMS-D24/26 - Arizona Church Sound
Contents
1. M 25 IB IDEE M ER 25 Factory Presets cerit iid ener at ra rt e Da fa Rr Aea aUa SNENA aA o E ERR dao ELE REM REI arb REED a ERRORS 26 EQ and Filter Response Graphs nne retra ctia ikea itn ea e Lea io Ree aga Pak ka Fed a EUR eres 27 Technical Specifications ncc eon e E ier neg Rr a ere Tied EE REC Ck DC A Peine Da F e dd 30 WALFanty cei inire REFER EERRR ER RANE REESE ind suse RR ERAREFRRERRI ERR A QR ERA RERRRERAGERARERAR 31 NOTES niic piepettene te i I EIE GU pee rete Uc Ier tum duse tes eH Tei Eii 32 LMS D2X user manual Page 4 user manual LMS D24 26 IMPORTANT SAFETY INFORMATION Please read carefully and keep the following instructions and safety information Heed all warnings and follow all instructions e Do not remove covers There are no user serviceable parts inside please refer servicing to qualified service personnel e This equipment must be earthed e Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus e Only use attachments accessories specified by the manufacturer e Servicing is required when the apparatus has been damaged in any way such as the power supply cord or plug is damaged liquid has been spilled or objects have fallen into he apparatus the apparatus has been exposed to rain or moisture does not operate normally or has b2. A 17 Input DSP block diagram aient eler een een EDER 17 Output DSP Block diarre nana neva watered 17 Stereo7 Mono formats iiie tete e en feti cde teed vies ec c ied ca bete ret scie ct o RTS 17 DSP processing ri rer ari eth ki HR ABER CR CE MM ERREE RAE FnG ER SEDES FRA EE MEHR RAP KLAR MARE BRAKE A E 18 Input Channels RE EITQI M EE 18 Parametric EqualisatiOn ii rnit eir tha Fake uhi ra eae EEDRR Eo ACE REY PA FALE Eaa ERR RREXE AE TAE TAN CN Su SER EVA Cung RR nd 20 High and Low shelving filters 1 eirca tiesi eta retia Foret inae sati ranuri isisi a kg aba aa cna pe aad aisia 20 Param ethic filters aciei t tete etie setate nte iui 20 Output Channels Mater crrpecrre cer errec ere irre ry GEOP EE Fe aa ANA ka er LEN MERE TRRT RR LA FE RENE VAS VETE RA ERR a Dg Ead 21 Gain and Polatity R R M 21 De A A E 21 High and Low Pass Filters 2 cootra ae nasa cerita a dns ena aoa ure cai aa a ken Vo sn basa eaa aka aa 22 LMS D2X user manual Page 3 user manual LMS D24 26 Parametric EQUalISATION 353 23 Bloc m E 24 nom M 24 Bu clc
3. 18dB Oct 24dB Oct 48dB Oct Linkwitz Riley 6 0 PEFFEM m 6 ze g 12 2 5 18 oO 24 30 36 100 1 10 1 10 Frequency Hz 12dB Oct 24dB Oct 48dB Oct LMS D2X user manual Page 27 user manual LMS D24 26 Bessel Magnitude dB 24 100 1 10 1 104 Frequency Hz 12dB Oct 24dB Oct Hardman Magnitude dB 100 140 1 104 Frequency Hz 4th Order 8th Order LMS D2X user manual Page 28 user manual LMS D24 26 Magnitude dB Magnitude dB Shelving EQ 140 Frequency Hz Low shelf varying Gain High shelf varying Slope Parametric EQ 140 Frequency Hz _ Varying Gain Varying Bandwidth LMS D2X user manual Page 29 user manual LMS D24 26 Technical Specifications General Inputs Input impedance Maximum input level Outputs Output Impedance Maximum output level Sample rate Frequency Response THD Dynamic Range Serial Comms Data Processing Gain Output channel source HP filter frequency LP filter frequency LP HP filter type Delay Limiter EO frequency EO gain EO width Connectors Audio inputs Audio outputs Serial comms Network comms Mains Mains Power Consumption Weight Size Two electronically balanced gt 10k ohms 20dBu Six LMS D26 Four LMS D24 electr
4. Threshold is user adjustable all other parameters are carefully calculated dependant on configuration to provide clean and effective control of signal dynamics Routing Knob A Output source selectable Input A Input B or Sum A B Configures the routing from input to output This function is only available in mono format Presets LMS D2X user manual Page 24 user manual LMS D24 26 UTILITIES Utility functions Two utility functions are provided to adjust screen contrast and the display units used for parametric equalisation bandwidth The device automatically adjusts for the variations in display contrast as the temperature of the LCD changes The screen contrast utility control sets the base contrast of the screen and also allows optimization for a given viewing angle Parametric equalisation width parameters can be displayed in either O or bandwidth expressed in octaves LMS D2X user manual Page 25 user manual LMS D24 26 FACTORY PRESETS For current factory preset files please visit our ftp site at ftp ftp turbosound com tech data presets These files can be loaded via TurboDrive into your controller or opened in TurboDrive and viewed offline LMS D2X user manual Page 26 user manual LMS D24 26 EQ AND FILTER RESPONSE GRAPHS Butterworth AN 3 ze d ze 3 E 9 oO 100 1 10 1 10 Frequency Hz 6dB Oct 12dB Oct
5. routed from L input and 3 routed from R input 1 and 4 for LMS D26 Outputs 2 routed from L input and 4 routed from R input 2 and 5 for LMS D26 e Outputs 3 routed from L input and 6 routed from R input LMS D26 only LMS D2X user manual Page 17 user manual LMS D24 26 DSP PROCESSING Input Channels Gain Knob A Gain adjustable in 0 2dB steps from 80 dB to 20dB Delay Knob A Delay adjustable in variable steps from 0 to 400ms The delay parameter is adjustable in fine steps at low values the adjustment becomes progressively coarser as the value increases The velocity sensitive Parameter Knobs therefore provide accurate setting of driver offset delays typically below 10ms and rapid setting of longer system alignment delays LMS D2X user manual Page 18 user manual LMS D24 26 High Pass Filter Knob A Frequency out off 10 0Hz to 25 6kHz in variable steps Knob B high pass filter type System high pass filtering is provided for the input signal This is the preferred location for high pass filtering as it affects all outputs and can therefore improve inter band phase relationships Filter type is selectable from Butterworth Bessel Linkwitz Riley and Hardman Filter slopes of up to 4th order or 24dB octave are provided Not all filter types are available in all slopes For example 18dB octave Linkwitz Riley filters do not exist The Hardman type filter is a
6. selected edit parameter is displayed on the bottom left corner of the LCD Pressing the edit select buttons moves through the available parameters for the current input or output Text display preset channel parameter and status information is shown on the 2x 24 character text display In most screens the currently selected channel is displayed on the upper line and the edit parameter on the lower line To simplify the display and enhance security some parameters or parameter pages are omitted when not relevant Parameter Knobs three velocity sensitive parameter knobs are used to adjust parameters shown on the display Up to three parameters are displayed on the screen The parameter name is shown above the parameter value in each of the three screen sections The parameter knobs have a fixed association with the screen sections the rightmost parameter knob adjusts the rightmost parameter and so on Output signal and limiter indication two LED s are provided for each output channel These show the signal level relative to the limiter threshold The yellow LED will light when the signal is 6dB below the threshold and the red warning LED will light when the limiter threshold is reached Mute buttons and status LED s each output has a mute button and associated mute status LED Pressing the button toggles the mute on and off Note that the mute buttons do not function when the Secure Mode is activated Secure Button on th
7. the value of a parameter or anti clockwise to decrease it Turning a knob rapidly will cause the action to accelerate so the value changes more rapidly Mute Buttons The LED s next to the mute buttons indicate their current status Pressing a mute button toggles between the mute on and off Store Button The unit has 45 memory locations and allows users to set up their own programs To store a preset in a location press the store button and use the encoders to select the memory location and name the preset Pressing the store button again completes the task Pressing any button other than store during the process cancels the procedure LMS D2X user manual Page 2 user manual LMS D24 26 CONTENTS Quick referente me M M 2 BIJgEu 2 Channel Select B ttons nii cie tete pae tei ti ha eiecit trate iust rta m ceed R ges 2 Edit Select BUttONS me M 2 Parameter Encod6ers tds tec did d cie ise te dies d d deside ied iac evens 2 NUES I 2 St re BUG OM e EET 2 Important Safety Information ca ccsciccceissccsccccsedeccasssescsadecesccecceccessacacecactsaseeaasadaacscacetecsstdacnacecdoseessacsescateaseteesvediais 5 Regulatory Compliance issicscccasscccccasccstacsccaciecsecasctecsctasscasecactesctececdascusseracenacena
8. user manual Page 12 user manual LMS D24 26 Navigation and Viewing Parameters Note The LMS D26 is shown in all the following screen shots however the features and parameters apply equally to the LMS D24 Many of the processing elements in each input and output path have features that may be controlled by the user such as gain frequency or limiter threshold We call these adjustable features parameters A parameter may be adjusted when it is displayed by turning one of the three parameter knobs Each of the three parameter knobs is associated with a zone on the display Adjusting the leftmost parameter knob will change the value of the parameter showing in the leftmost zone of the display and so on Turn a knob clockwise to increase the value of a parameter or anti clockwise to decrease it The knobs are velocity sensitive so turning a knob rapidly will cause the action to accelerate so the value changes more rapidly LMS D2X user manual Page 13 user manual LMS D24 26 Navigation The DSP parameters are organised by channel The currently selected channel is shown in the top left hand corner of the display You can navigate between the channels by pressing the channel buttons Pressing the channel buttons will scroll through the channels utilities and back to the default screen When using a Preset that is stereo linked the channel selection will reflect this For example 1 amp 4 indicates outputs 1 an
9. COTurbosound LMS D24 LMS D26 DIGITAL LOUDSPEAKER MANAGEMENT SYSTEM USER MANUAL Turbosound Ltd Star Road Partridge Green West Sussex RH13 8RY England Tel 44 0 1403 711447 Fax 44 0 1403 710155 web www turbosound com Version 1 2 user manual LMS D24 26 QUICK REFERENCE LMS D26 shown O seen X Qiurbosound Ule mU Oi B BI A AD mr ta E arta LOLOSPI ATI MANAGEMENT vrm Display The LCD displays preset and parameter information At start up the display shows the default screen with the memory location and name of the current preset on the lower line of text Channel Select Buttons The currently selected input or output channel is shown in the top left corner of the display Pressing the channel select buttons scrolls through the available inputs and outputs If operating stereo linked the channel name will indicate the channel association For example CH A B means both input A and B parameters Edit Select Buttons The name of the edit parameter is displayed in the bottom left portion of the LCD Pressing the edit select buttons moves through the available parameters for the current input or output Parameter Encoders Up to three parameters are shown on the display The parameter name is shown with its current value below Where appropriate parameters are grouped according to function for example centre frequency width and gain for parametric EO Turn an encoder clockwise to increase
10. be defective provided that the product is returned shipping prepaid to an authorised TURBOSOUND service facility Defects caused by unauthorised modifications misuse negligence act of God or accident or any use of this product that is not in accordance with the instructions provided by TURBOSOUND are not covered by this warranty This warranty is exclusive and no other warranty is expressed or implied TURBOSOUND is not liable for consequential damages LMS D2X user manual Page 31 user manual LMS D24 26 NOTES LMS D2X user manual Page 32 Turbosound Ltd Star Road Partridge Green West Sussex RH13 8RY England Tel 44 0 1403 711447 Fax 44 0 1403 710155 web www turbosound com
11. ctascateszadasccsienasesaecavecsvaesacaseieasneays 5 Thanks ciet et i t eea ten fo tet Fette esc tain mete 6 Unpacking the controller on c a birra eae oar Eee a Pepe ea E C Din kd Dec Re EET e Ea Ra Er uud 6 iuge c Es 7 NIU c En 7 he User Guilde noe e ed pesci tnt teb osi emt eec ed cams 8 Front Panel FUmCtions m 9 Rear Panel FUNCHONS 11 Operating the LMS series Controller esccesseceeeeeeeeeeeeeeaeeeseteneeeneeeaeeaeesaesaeseneeaeeaeesaeseaeseaeseeeeeneeeasenaeeenees 12 SLANTING Ule E 12 Selecting a Factory Preset estis eere tasa tbe reae aa ku esi nio Fa e adea a Fa ka Een Fo eS Vasa a as a aep od EV asa rod aig 12 Creating a CrosSOVGBF iic cc ac rea chavs rate cii i ED ERR Ee ra ELA REDE n Anan E ceased diva ERR ERE AE RYE XR REN cas eR RAIN eR EAE RR RR 12 Navigation and Viewing Parameters oss sneskred EN nnne nennen nennen 13 NEMPE 14 ld e 15 Preset Recalls iii nine paces iini iiti eee te ierit Dii epeiescesi ie De ertt ed eines 15 creo m EAO 16 DSP Processing LAY OU M
12. d 4 When navigating onto an output channel the usage of the output as define in the factory preset will be shown briefly at the top of the screen CHANNEL Pressing the edit navigation buttons gives access to the various pages of parameters available for each channel The currently selected page is shown in the bottom left hand corner of the display this is omitted on some pages where the function is obvious The screen shows up to three normally related parameters for a given part of the processing functions on a given channel The edit buttons allow you to scroll in either direction through the different processing pages for a given Channel When you go past the last page you will be returned to the default page The channel buttons allow you to scroll in either direction through the input and output channels whilst trying to maintain the currently viewed processing block If the channel you scroll to does not have the currently viewed processing block the next one will be shown instead NB When the unit powers up the settings will be the same as those when the unit was last switched off LMS D2X user manual Page 14 user manual LMS D24 26 Presets The device contains a total of forty five user and Factory Presets The user cannot overwrite the basic mono basic stereo or Factory Preset programs Preset Recall To select an existing Preset press the Recall Button so the indicator above it illumi
13. e rear a momentary button is fitted behind the rear panel between the output XLRs and the RS232 port When activated this will disable all the front panel controls so they cannot affect the signal path making the unit secure against tampering When in secure mode the indicators still operate normally Note that the communications port is still active in secure mode LMS D2X user manual Page 10 user manual LMS D24 26 Rear Panel Functions e Power Inlet provides connection to a suitable mains electricity supply using the cable supplied The controller has a switch mode power supply that is capable of operating with a nominal mains voltage of 80 to 240v 50 60Hz without re configuration e Network expansion port where a future network card can be fitted e Audio Input connectors these are fully balanced and are wired pin 1 ground pin 2 hot and pin 3 cold The two inputs have pin 1 connected directly to the chassis and feed the signal processing chains If an unbalanced source is used a connection should be made between the pin 3 cold signal and the ground connection of the unbalanced source e Audio Output connectors the processed outputs are impedance balanced and are wired pin 1 ground pin 2 hot and pin 3 cold An unbalanced input may be driven by by connecting pin 3 cold signal to the ground connection of the unbalanced destination input Note that output pin 1 s are ground lifted at audio fr
14. een dropped Regulatory Compliance This product complies with both the EMC Directive 89 336 EEC and the Low Voltage Directive 73 23 EEC as issued by the Commission of the European Community Compliance with these directives imply conformity with the following European standards e EN60065 Product safety e EN55103 1 Electromagnetic Interference Emission e EN55103 2 Electromagnetic Susceptibility Immunity This product is intended for operation in the E2 commercial amp light industrial and E3 urban outdoors Electromagnetic Environments LMS D2X user manual Page 5 user manual LMS D24 26 Thanks Thank you for choosing a TURBOSOUND LMS series controller for your application Please spare a little time to read the contents of this manual so that you obtain the best possible performance from this unit All TURBOSOUND products are carefully engineered for world class performance and reliability If you would like further information about this or any other TURBOSOUND product please contact us We look forward to helping you in the near future Unpacking the controller After unpacking the unit please check carefully for damage If damage is found please notify the carrier concerned at once You the consignee must instigate any claim Please retain all packaging in case of future re shipment LMS D2X user manual Page 6 user manual LMS D24 26 Introduction The Turbosound LMS series o
15. equencies but connected to ground at RF for good EMC performance The intention being that the amplifiers the processor is driving should be responsible for the grounding of their input cable shields e Communications port connector the unit may be controlled entirely from another controller typically a Personal Computer running an application that is compliant with the ObCom standard Connection will normally be made to the controller via this serial port connector This port is also used for updating the firmware in the unit Note The communications port is NOT disabled when the front panel is made secure using the secure button LMS D2X user manual Page 11 user manual LMS D24 26 OPERATING THE LMS SERIES CONTROLLER Starting up The unit will energise as soon as power is applied to the IEC inlet there is no power switch During the start up process the firmware application model number and version numbers are displayed and the outputs are muted until the unit has completed its internal checks Once the start up routines are complete and the unit is ready to pass audio the DSP signal path will be restored to the current settings when it was last powered down and the audio signal is gradually ramped up to its correct level Selecting a Factory Preset There is a library of thirty Factory Presets to suit a range of Turbosound enclosures Factory Presets contain some parameters that are fixed and hidden from view
16. f loudspeaker management systems represents the current state of the art in digital electronics The LMS D24 26 are compact and powerful DSP based audio processing units designed for use with Turbosound loudspeaker systems and associated bass enclosures combining the functions of multiple conventional products in a compact 1U high 19 rack unit To achieve this the LMS D26 has 2 inputs and 6 outputs the LMS D24 features four outputs which are configured by different factory presets to allow use with a variety of systems The units are designed to provide specific equalisation and crossover points aimed at optimising the performance of these Turbosound loudspeaker systems In addition limiters delays eq gain polarity and crossover filter controls are accessible to the user in order to match specific operation environments The LMS series crossovers are designed for quick setup and adjustment via easy to use front panel controls Features e Minimal signal path design providing exceptional audio quality with carefully optimised processing and high performance converters for a full gt 111dB dynamic range 96kHz sampling rate and minimal filtering Audio grade capacitors are used in the analogue signal path e Sonically superb ADC DAC combination a carefully matched pairing of the best devices from Burr Brown and Wolfson e Newly released family of Analogue Devices SHARC DSP e Extended bandwidth 96kHz sampling frequency
17. lways described by its order as the filter becomes progressively steeper rather than following a linear slope so a dB octave description is not accurate LMS D2X user manual Page 19 user manual LMS D24 26 Parametric Equalisation Eight sections of equalisation are provided two shelving filters and six fully variable parametric sections High and Low shelving filters Knob A Frequency 10 0Hz to 25 6kHz in variable steps Knob B Slope 6 to 12dB octave in 1dB steps Knob C Gain 15dB in 0 2dB steps The frequency is specified as point where the filter deviates by 3dB from the gain value Parametric filters Knob A Centre Frequency 10 0Hz to 25 6kHz in variable steps Knob B Width display selectable O or BW Bandwidth BW adjustable from 0 05 to 5 octaves in variable steps O adjustable from 14 2 to 0 2 in variable steps Knob C Gain 15dB in 0 2dB steps LMS D2X user manual Page 20 user manual LMS D24 26 OUTPUT CHANNELS Gain and Polarity Knob A Gain adjustable in 0 2dB steps from 80 dB to 20dB Knob B Polarity selectable normal or reversed with reference to other outputs Delay Knob A Adjustable in variable steps from 0 to 80ms As for input delay velocity sensitive Parameter Knobs provide finer adjustment at low levels and rapid selection of higher values LMS D2X user manual Page 21 user manual LMS D24 26 High and Low Pass Filters Kn
18. nates Turn parameter knob A until the required Preset number is shown on the display Factory presets are indicated by a box symbol appearing after the preset number Press the Recall Button again to activate the Preset Pressing any other button will cancel the operation SELECT PRESET RECALL O TO RECALL RECALL O Users can develop their own Preset based on one of the basic or Factory Presets stored within the device Once a basic or user Preset has been recalled a user has complete freedom to adjust any or all of the parameters Factory Presets can be used as the basis for user Presets but they have some parameters that are predefined as a function of the loudspeaker system These parameters are hidden from the user as they should be constant regardless of application LMS D2X user manual Page 15 user manual LMS D24 26 Preset Store To store the current Preset in a user location press the Preset Store Button so the indicator above it illuminates Turn the first parameter knob until the required Preset location number is show on the display A Preset name of up to 12 characters in length can be entered using parameter knobs B and C Pressing the Store Button again completes the process and stores the Preset As with Preset Recall pressing any other button cancels the operation SELECT STORE STORE O LOCATION STORE O NAME PRESET The user can overwrite non protected Presets only if an at
19. ob A Frequency out 10 0Hz to 25 6kHz out gt gt Knob B high pass filter type Filter type is selectable from Butterworth Bessel Linkwitz Riley and Hardman Filter slopes of up to 8th order or 48dB octave are provided Not all filter types are available in all slopes For example 18dB octave Linkwitz Riley filters do not exist The Hardman type filter is always described by its order as the filter becomes progressively steeper rather than following a linear slope so a dB octave description is not accurate LMS D2X user manual Page 22 user manual LMS D24 26 Parametric Equalisation Eight sections of equalisation are provided in a similar format to the input channel equalisation two shelving filters and six parametric Knob A Frequency 10 0Hz to 25 6kHz in variable steps Knob B Slope 6 to 12dB octave in 1dB steps Knob C Gain 15dB in 0 2dB steps The frequency is specified as point where the filter deviates by 3dB from the gain value Knob A Centre Frequency 10 0Hz to 25 6kHz in variable steps Knob B Width display selectable O or BW Bandwidth BW adjustable from 0 05 to 5 octaves in variable steps LMS D2X user manual Page 23 user manual LMS D24 26 O adjustable from 14 2 to 0 2 in variable steps Knob C Gain 15dB in 0 2dB steps Limiters Knob A Threshold 40dBu to 20dBu in 0 2dB steps A high performance low distortion limiter is provided on each output
20. on of even relatively low input signal levels The 4 dBu LED s are intended to show nominal operating level and can also be useful for setting system gain structure Clip LED s warn the user of input overload and operate at 19 dBu e Program Store and Recall these controls provide access to 45 presets Pressing the store button allows the user to name a preset and choose which memory location it will be held in Pressing store button again completes the process The Recall function operates in a similar way pressing the recall button allows the user to select which preset they require pressing the button for a second time then confirming recalls the new DSP settings The unit allows the user to set up user programs with full access to all parameters Note that presets cannot be stored or recalled when secure mode is activated e Channel Selection Buttons the currently selected channel is displayed on the top left hand corner of the LCD Pressing the channel buttons scrolls through the available input and output channels and finally through the utility functions and back to the default screen If operating a stereo linked preset the channel name will indicate the channel pairing For example A B means both input A and B parameters The name of the output will be shown briefly at the top of the display when stepping onto an output LMS D2X user manual Page 9 user manual LMS D24 26 Edit Select Buttons the currently
21. onically balanced lt 100 ohms 20dBu into 600 ohm load 96kHz 10Hz 40kHz 1dB filters disabled 10Hz 20kHz 0 25dB filters disabled 0 0196 10dBu 20Hz to 20kHz 30kHz bandwidth gt 111dB A weighted 22kHz bandwidth gt 108dB unweighted 22kHz bandwidth 38 4kbaud format 8 data 1 stop no parity 20dB to 80dB and mute 0 2dB steps Input A Input B and SUM Off 10Hz to 25 4kHz 1 36 octave steps 10Hz to 25 4kHz and off 1 36 octave steps 12 18 amp 24dB octave Bessel and Butterworth 12 24 and 48dB octave Linkwitz Riley and 4 or 8 order Hardman Input 400ms output 80ms High performance limiter adjustable threshold in 0 2dB steps automatic time constants 10Hz 25kHz 1 36 octave steps 15dB to 15dB 0 2dB steps 5 0 to 0 1 octaves bandwidth 1 36 octave steps 3 pin female XLR 3 pin male XLR 9 pin female D type future option 3 pin IEC Universal switch mode PSU 85 to 250v AC 50 60Hz 25 watts 2 7kg net 5 9 Ibs 1 75 1U 19 10 44 482 254mm excluding connectors Due to continuing product improvement the above specifications are subject to change LMS D2X user manual user manual LMS D24 26 WARRANTY This product is warranted against defects in components and workmanship only for a period of one year from the date of shipment to the end user During the warranty period TURBOSOUND will at its discretion either repair or replace products which prove to
22. provides for a nominally flat response to 40kHz e Front panel parameter rotary encoder provides a familiar and easy to use control format with all filter information displayed simultaneously on a backlit LCD display LMS D2X user manual Page 7 user manual LMS D24 26 THE USER GUIDE This user manual gives a progressively more detailed description of the functions of the TURBOSOUND LMS D26 and LMS D24 loudspeaker management systems A single page quick reference guide is provided for those users who are experienced with this type of equipment and just need to know how to drive the front panel A detailed explanation of the front and rear panel controls and indicators is contained in the next section The final section describes each individual function or feature with annotated images explaining its use Where appropriate the LCD is shown to further elaborate on the unit s operation To complete the manual a reference section is included describing the technical performance of the device complete with graphs of filter responses and details of the Factory Presets and their configuration LMS D2X user manual Page 8 user manual LMS D24 26 Front Panel Functions E e Input Signal Indicators A set of three pairs of LED s indicate signal present 4dBu and input clip for both channels The signal present LED s operate at approximately 40 dBu giving a useful indicati
23. tempt is made to save a Preset in a location already occupied by a basic or Factory Preset a LOCKED PRESET message is displayed LMS D2X user manual Page 16 user manual LMS D24 26 DSP PROCESSING LAYOUT Input DSP block diagram Input Ein 4th Order HPF Six Band PEQ Low Shelf EQ High Shelf EQ Routing NB Channel B processing is identical to Channel A but for clarity it is not shown Input B T Output DSP block diagram 8th Order HPF 8th Order LPF Six Band PEQ Low Shelf EQ High Shelf EQ gt Mute gt Limiter Routing Stereo Mono Formats There is only one standard layout of the processing blocks but flexible routing and control linking allows this layout to be adapted to a wide variety of applications There are two Formats Mono or Stereo With the Mono format all outputs have unique parameter settings and all outputs are identical in terms of processing functions and routing capability This is the most flexible Format Stereo format pairs the inputs and outputs for stereo operation the parameters of each member of the pair being identical The routing of inputs to outputs is fixed This format is intended for symmetrical stereo operation eliminating the need to make identical parameter adjustments for each channel The channel pairing is e Left and Right Inputs Outputs 1
24. the remainder of the DSP parameters are available for user manipulation The number and type of hidden parameters is dependant on the Factory Preset typically crossover frequencies output delay and some EQ s are hidden those settings that are a function of the loudspeaker cabinet design and should not require adjustment for different applications To recall a Factory Preset for a particular cabinet or system press Recall and use the left hand parameter knob A to scroll through the available factory preset locations as indicated by a box symbol after the preset number Once the appropriate preset has been selected press recall again at which point you will be asked to confirm the action by pressing recall for a third time This is to guard against accidental recall of Presets Factory Presets are locked so they cannot be over written The user can however store an edited version of a Factory Preset in any free preset location Details of all the Factory Presets can be found in Appendix A Creating a Crossover In addition to the Factory Presets the unit has two further Base Presets mono and stereo These Base Presets are stored in locations 1 and 2 respectively they can be used to develop settings for any loudspeaker combination and are recalled in the same way as the Factory Presets described above These Presets are also locked but the user can name and store their own edited versions in any free preset location LMS D2X
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