DSP-4080 - MK Light Sound
Contents
1. Additional units may be set up as slaves with incremental ID s The adapter is available in a kit which includes a USB Serial converter the XLR to 9 pin adapter and the K2 ADE converter itself This complete kit is part number USB 485 22 User s Manual DSP 4080 AES inputs and outputs The DSP 4080 units have a full AES implementation built in as standard This allows the unit to both receive digital audio directly and to transmit digital audio on to other devices The switching of input and output can be performed independently and the inclusion of sample rate converters on the inputs allows the unit to accept sample rates from 32kHz up to 192kHz DIGITAL INPUTS SWITCH Ute IT 2 o DIGITAL INPUTS SWITCH AES OUT 1 amp 2 k A AES ENT MUST BE EARTHED CAUTION SHO GIGHAZARD DO NOT REMOVE COVERS AES input Input selection is via a recessed switch on the rear panel of the unit between input D and output 1 A red LED inside this aperture illuminates to show that the AES digital inputs have been selected A complimentary LED on the front panel also illuminates The switch controls the rear panel LED directly whilst the front panel one is via the processor allowing it to relay a little more information If it is flashing this means that AES inputs have been selected but have not locked Once a stable AES signal is being received it will be permanently illuminated The AES inputs are marked on t2. e Have an attack time which is calculated to allow transients through but keep the RMS level below the speaker manufacturer s specification e Have a release time which is sufficiently long to avoid the limiter itself modulating the program e Be intelligent enough to adjust the envelope of the limiter according to the frequency content of the program material The program limiters are capable of performing all these tasks The only parameter that the user must set manually is the threshold and it is crucial that this is done correctly Consider the table below dB Ratio Vrms Pwr 8 Q Pwr 4 Pwr 2 Q 56 23 Using this table it is a straightforward procedure to work out the required setting of the limiter thresholds for the system e First check the RMS power rating of the speaker system and its impedance e Look up this value in the table above using the closest value below the rated power of the speaker system Note the corresponding dB value e Check the gain of your amplifier which needs to be in dB e Subtract FROM this gain figure that obtained from the table to find the required absolute setting for the limiter thresholds Note that for safety always set the limiter threshold 1 or 2 dB below the maximum allowable worked out using the above method Alert ALWAYS REFER TO D A S FOR LIMITER SETTINGS 30 User s Manual DSP 4080 r ver Filter Sl It should also be noted that the tur
3. range If this feature is enabled the display will show Automatic T C in place of the attack and release times Selection of automatic time constants is through the Design a Crossover wizard in the Crossover Sub menu OP1 Output1 Limiter Atk 2 0mS Rel x16 22dB Using FREQ the attack time change Through Q the release time change and through GAIN the threshold change To complete the procedure press ENTER The clip limiter on each output is designed to sit at a threshold just above the standard limiter and has a look ahead attack so that its threshold can never be exceeded The release time can be automatically linked to the high pass filter frequency so that it is set to a value appropriate for the output s frequency range If this feature is enabled the display will show Rel Auto in place of the release time Selection of automatic time constants is through the Design a Crossover wizard in the Crossover Sub menu More information about the limiters and their use is given in the section on page 27 OP1 Output1 ClipLim Rel Medium 2dB Above Using FREQ the release time change and through GAIN the threshold change To complete the procedure press ENTER User s Manual DSP 4080 i y The method of linking inputs or outputs together during editing is achieved in the same way so only crossover output ganging will be explained here Having selected Crossover Ganging from the menu und
4. E Lu Ly 3 lt a Ge hat x T ka a Le K i A L a BACK and NEXT step through channel parameters amp menus LCD display flatten parametric EQ sections Press BYPASS to temporarily MENU activates menus 36 User s Manual S di a Q AOQB ay Jesday gt UD OJUI snaeqs SHY O gt u0TID9T9SS andano apou nuau o WINE O SUOIOSII O spuoges QZ uam INOGe Jae apou ynejep ewou 0 UNIS im pun ay apou nuaw ul USYe SI UOHO OU Ji yey SION gt TD SutxooT qarun SUTIL 9 931 395 SUTL PTOH ATT drIO E UD Sou ISTO SUTL KeT q lt gt UD y3PTmMpueg 0 199114 s19329N 23nda3no urr dn eyem uzeTv eznjezedusy ss uqau5brzg QAJT 3Se13u0 GOT Up UD snaeas ue3sA s oegz qur ras dna s OOZ 19STM lt gt UD Ssezgz qur Teuz qax GO lt gt Surbues z Aossozo qp TD z Aossozo e ubrs q lt gt TD 3a s q ndur cD lt gt Hutbuey 3ndur ww Wap TD Kzousm zoqs lt gt QD Xiousx TTeO N suonoss Jeje Ul paurejdxe aq M s y pue suonoun euonppe sso JO SPJEZIM Pes IM esey JO auos WAI NUSLU YORE jo jara do ay smoys juo ajqe sy umoys se uopnq 1103 10 31NIN ejeudoldde ay Aq pamajo ANN Puissald Aq usalos ynelsp ay vo AOSD ajgissesoe ale eseyl sinouoys nualu peubisse u q aney suonoun jo 10 e la s s NUBW y JO MANAO Ue s mojeg 3 U
5. The unit may be switched on and off as necessary just be sure NOT to press MENU or the entire Break Code procedure will have to be repeated 26 User s Manual DSP 4080 Advanced audio features Program Limiter High performance digital limiters are provided for each output with control over attack time release time and threshold parameters see details below This level of control allows the user to balance the required subjective quality of the limiter against the driver protection requirements lt does also mean that an incorrectly set limiter may sound awfull In particular as with all limiters using too fast an attack or release time will result in excessive low frequency distortion In the Design a Crossover sub menu there is an option for automatic limiter time constants Use this option if you are unsure how to set the time constants manually We recommend the use of the automatic setting In this mode the time constants will be automatically set from the High Pass filter frequency according to the table below The time constants are set by the high pass filter frequency for that channel High Pass Filter Auto Attack Time Release Time User s Manual 27 DSP 4080 D Max Clip Limiter The main limitation with traditional dynamics control is the inability of the processing to react truly instantaneously to the signal One of the most significant advantages of digital signal processing over analogue is the abili
6. Type Input amp Xover Selecting to STORE or RECALL using the GLOBAL MEMORY Sub Menu option offers the possibility of storing various combinations of the available memory types and these are selected using the BACK and NEXT keys To explain how this all works please consider the following example There are 10 memories stored in the unit with various combinations of input and crossover memories CROSSOVER MEMORY MEMORY MEMORY e MEMORY 3 MEMORY 4 MEMORY 5 MEMORY 6 MEMORY 7 MEMORY 8 a TI INPUT MEMORY MEMORY 9 INPUT MEMORY CROSSOVER MEMORY MEMORY IO a OOC 16 User s Manual DSP 4080 Through STORE using GLOBAL MEMORY Sub Menu we have stored 10 memories If it is required to recall a location that contains Input Only settings this will limit the selection as shown below 2 3 4 6 8 9 and 10 CROSSOVER MEMORY MEMORY CROSSOVER MEMORY But recalling 4 6 8 or 10 will leave the current Xover settings untouched However if it is required to recall Input amp Xover settings then 4 6 8 and 10 will be the only numbers available with the option to change all the parameters CROSSOWYER MEMDAY MEMORY l INPUT MEMORY MEMORY 2 MEMORY 3 MEMORY 4 MEMORY 5 MEMORY 6 MEMORY 7 MEMORY 8 MEMORY 9 MEMORY IO al ra TET Note that storage and erasure of memories does not f
7. gang MUTE begins to flash 4 fa j A J EEE ETE E H 4 N g KER MANAGEMENT SYSTEM a6 _ ET lt E J J EO O Oo Press EDIT keys to gang SA flashing channel with selection EDIT LED will light to show lowest number in gang Press a MUTE key to choose the output to gang its LED will begin to flash and an EDIT key will illuminate to show which output it is currently ganged with To change this selection just press another EDIT key remembering that gangs work from the highest to lowest number So to gang outputs 1 and 5 press MUTE 5 then EDIT 1 the display will show lt Crossover Ganging Gang Output 5 with 1 Ganging is cleared by selecting Ganging None from the initial choices given above The Input Ganging procedure is identical to the crossover ganging selectable under the Input Sub Menu User s Manual 15 DSP 4080 Memory structure The DSP 4080 has its memories split into sections allowing independent recall of crossover settings i e all parameters associated with outputs and input settings There are therefore two types of memory available Input Only and Crossover Only also combinations Input Xover These and all combinations of memory types appear in the GLOBAL MEMORY Sub Menu and its operation warrants a little more explanation RECALL a Memory Type Input Xover ENTERS STORE a Memory Type Input amp Xover z ERASE a Memory
8. of the first one it acting as a converter for them but their RS232 ports are not used RS232 Connection Single Unit A typical interface set up might involve running an RS232 link from laptop or a desktop computer to a DSP 4080 unit set up as a master unit The diagram below shows this method of connection the required menu options are also given Note that the RS232 cable must be a 1 1 connection type NOT a null modem cable which has connections crossed internally Walkabout Pack II KIT Please see your manual available from our website 9 pin D type 1 1 Male to Female NOT null Modem cable OR USB Serial A Converter DSP 4080 RS232 IN TM Interface Sub Menu Mode RS232 Mode SERIAL SPEED 115200 Stop MIDI Prog Chng Yes Running AudioCore Remote ID Number 1 Remote Menu RS232 Laptop or Desktop COM to COM12 Baud Rate 115200 18 User s Manual DSP 4080 L ing New Software vi p The unit s internal software may be updated via the RS232 port ONLY one unit at a time We recommend disconnecting all other devices when updating the software The unit s interface must be set as RS232 Master on ID1 for the PC loader program to recognise it and allow the update to be sent RS232 C tion Multiple Units If control over multiple units is required typically the slaves will be set up to run from the RS485 ports on the master unit Note the incremental ID NUMBER option in the unit s interface
9. parameters as they are edited and all menu selections DSP 4080 SPEAKER MANAGEMENT SYSTEM Control Keys Selection and adjustment of parameters 2 NEXT key moves forward through list of parameters 3 BACK key moves backwards through list of parameters 4 MENU key activates the main menu a second press selects the last menu edited a a third press selects the last menu item In this way three presses on MENU from the default screen will jump back to the last parameter adjusted Selection of different menus is s et accomplished using the BACK and NEXT keys or with the FREQ encoder 5 ENTER key enters the chosen menu confirms selections and changes filter types when editing parametric sections 6 BYPASS will flatten the currently selected parametric sections Note that for safety reasons it is not possible to bypass the high and low pass filter sections 7 QUIT exits menus back to the default screen FREQ Q e e 8 Rotary Encoders Three velocity sensitive encoders adjust the relevant 8 parameters as displayed on the screen 9 Status LEDs The two status LEDs show from left to right AES inputs selected flashing if not locked and AES outputs selected I AF S ou Tr Input Sections Control and monitor input sional paths Cup cup Cup Red 10 MUTE buttons illuminate when pressed and mute audio for e a zt that channel ce l 11 EDIT buttons illuminate yellow when pressed and acces
10. remote control data over long distance or multiple unit applications See page 18 for more information OTEC TOH AGAINST FIRE REPLACE OUTPUT 8 OUTPUT 7 OUTPUT 6 OUTPUT 5 OUTPUT 4 OUTPUT 3 OUTPUT 2 OUTPUT 1 MRE LD PI ROT DOLO MADE IN THe UK EY XTA 4 Audio Outputs 3 pin XLR sockets are provided for each channel All are fully balanced pin 2 hot 3 cold 1 screen Note the legending on the panel to designate which outputs are used for AES streams when the digital outputs are enabled Please see page 23 for more information 5 AES Input Switch Recessed switch to select AES digital inputs Red LED will illuminate in the hole when AES inputs are selected along with the corresponding front panel indicator 6 Audio Inputs 3 pin XLR sockets are provided for each channel All are fully balanced pin 2 hot 3 cold 1 screen Note the legending on the panel to designate which inputs are used for AES when the digital inputs are enabled Please see page 23 for more information WARNING Class device This equipment must be earthed If the cable or the mains plug are damage they must replaced Always replace the fuse with the correct type and rating as shown on the rear panel legend User s Manual 5 DSP 4080 na the devi Note about operation with AudioCore software sarycone The following operating information covers setup and control of the DSP 4080 via the front panel controls o
11. software along with existing and future AudioCore products Features Superb audio quality carefully optimised double precision signal processing coupled with 24 bit conversion ensure a dynamic range in excess of 117dB The high sampling rate of 96kHz means minimal filtering providing exceptional sonic purity with a bandwidth in excess of 32kHzZ A flexible input output multi mode format caters for any configuration regardless of scale Both routing of inputs to outputs and ganging for editing are completely flexible A completely new SHARC based DSP platform supplies phenomenal computational power allowing the unit to provide not only multiple bands of standard parametric equalisation on every input and output but an additional full spectrum graphic equaliser on each of the four inputs This additional power also permits both program limiters and no overshoot clip limiters on each output Delay of up to 650MS may be independently set for each output with an exceptionally fine minimum increment of 300nS which corresponds to a distance change of 0 1mm The comprehensive standard specification also includes up to 256 memories and remote control via RS232 or RS485 ports with security lockout User s Manual 3 DSP 4080 my o Z Cur hd pa AS MLS 1 LCD Screen Shows by default the name of the last recalled memory on the bottom line of the screen and the current routing on the top line Also used to show all
12. the input delay on channel A is set to 500mS the maximum available output delay for any output fed from input A will be 150mS The readout units can be changed between time in milliseconds distance in feet or distance in metres OP1 Output 1 Delay Delay 0 0000mS Note The delay steps are 1mS 843mm through FREQ 10uS 4mm through Q or 0 3uS 0 1mm through GAIN encoder 12 User s Manual DSP 4080 Output hial filt The high pass crossover filter on each output has a frequency range of lt 10Hz up to 32kHz in 1 36th Octave steps If you try to set the high pass filter to a higher frequency than the low pass which would be pointless and result in no output the message High Low Freq Overlap will be displayed Note that to access the 48dB Octave filters parametric bands 6 amp 7 need to be bypassed or set to OdB If they are not the message Bypass PEQ s 6 8 7 To Access 48dB Slopes will be displayed OP1 Output1 HPF lt 10Hz Linkw Riley 48dB The FREQ allows to change the frequency and using Q the slope tput low filter The low pass crossover filter on each output has a frequency range of 35 1Hz up to gt 32kHZ in 1 36th Octave steps If you try to set the low pass filter to a lower frequency than the high pass which would be pointless and result in no output the message High Low Freq Overlap will be displayed Note that to access the 48dB Octave filters parametric band
13. 1 82kHz HIGH OUTPUT 1 82kH2 22 2kHz AUX C OUTPUT IOHz 32kHz AUX D OUTPUT IOHz 32kHz 8 User s Manual DSP 4080 2x4 way crossover Inputs A and B feed four outputs each with inputs C 4 D being unused Default suggested crossover frequencies are shown by each output LOW OUTPUT 15Hz 149Hz OUTPUT LO MID OUTPUT 149Hz 1 31kHz HI MID OUTPUT 1 3lkHz 8kHz HIGH OUTPUT 8kHz 22 2kHz LOW OUTPUT 15H 149Hz LO MID OUTPUT 149Hz 1 31kHz HI MID OUTPUT 1 3lkHz 8kHz HIGH OUTPUT SkHz 22 2kHz CH NG CH CH gt w m El y y y y y y y 3 3 a S 3 S g 1x8w r ver Inputs A is fed to all eight outputs with initial settings being all full bandwidth The crossover points can be adjusted as desired INPUT FULL RANGE OUTPUT IOHz 32kHz A FULL RANGE OUTPUT IOHz 32kHz FULL RANGE OUTPUT IOHz 32kHz FULL RANGE OUTPUT IOHz 32kHz INPUT FULL RANGE OUTPUT IOHz 32kHz FULL RANGE OUTPUT IOHz 32kHz FULL RANGE OUTPUT IOHz 32kHz FULL RANGE OUTPUT IOHz 32kHz CH NG GH EH gt w m y y y y y y y a g a g g g g User s Manual 9 DSP 4080 Free Assian Routi If none of the preset configurations are appropriate to the required system setup it is possible to manually select the routing of the cros
14. BACK and NEXT keys to move to the next character Alternatively the EDIT keys can be used to enter a code by pressing any combination of the eight buttons Each EDIT key represents its channel labelling as described in the locking section Forgotten the Password Don t panic Your unit can still be unlocked In an attempt to improve the security system on the DSP 4080 and prevent a standard master password from becoming common knowledge the units now have a random password key generator The procedure for unlocking a unit using the password override is explained below Switch the unit on with the MENU key held in momentarily After a few seconds the unit will ask for a security code Use the EDIT keys in the same manner as for entering lock codes see page 25 for details and enter 2121 The display will show Enter XTA Supplied Code Break Code 12345 NNNN The Break Code in the example 12345 should be noted and supplied to DAS We have software to generate the corresponding Pass Code which should be typed in followed by ENTER This will unlock the unit and wipe the previous password Note the following about this procedure Once the Break Code has been noted do NOT press MENU again during the operation of the unit except to get back to this point on power up or a different code will be generated The unit may be used as normal but every press of MENU will change the Break Code so the Pass Code we provide will not work
15. User s Manual DSP 4080 DSP 4080 Pr ion ri Conserve y lea todas estas instrucciones Siga todas las advertencias El signo de exclamaci n dentro de un tri ngulo indica la existencia de componentes internos cuyo reemplazo puede afectar a la seguridad Aparato de Clase por tanto debe estar conectado a tierra El signo del rayo con la punta de flecha alerta contra la presencia de voltajes peligrosos no aislados Para reducir el riesgo de choque el ctrico no retire la cubierta El equipo dispone de un conector est ndar IEC60320 14 con portafusible como conector de alimentaci n Utilice este equipo s lo con su apropiado cable de alimentaci n El cableado exterior conectado a estos terminales requiere de su instalaci n por una persona instruida o el uso de cables flexibles ya preparados Este s mbolo indica que el presente producto no puede ser tratado como residuo dom stico normal sino que debe entregarse en el correspondiente punto de recogida de equipos el ctricos y electr nicos La posici n de encendido est indicada en el interruptor mediante los correspondientes s mbolos normalizados IEC 60417 1 1998 y IEC 60417 2 1998 Si el aparato es conectado permanentemente la instalaci n el ctrica del edificio debe incorporar un interruptor multipolar con separaci n de contacto de al menos 3mm en cada polo No exponga este equipo a la lluvia o humedad No use este aparato cerca del agua p
16. a high Q value will result in quite a large overshoot in level at the turnover frequency This type of filter is often also called a resonant filter y lt Elliptical filters 2 InA Input A HPF 1 3 1k00Hz HP Ellip Remember to change filter types press BYPASS to bypass the filter and then use ENTER to select the filter type The elliptical filter has adjustable frequency only This sets the 3dB point of the filter which features a steep roll off of approx 36AB Octave down to one Octave above or below in the case of a HPF the turnover frequency However the gain does increase again above this frequency to settle at 12dB down from OdBr This filter can be used in conjunction with the standard crossover filters to produce sharper roll offs than would be otherwise achievable The use of this filter is explained in the following example The graph shows three different low pass filter shapes Number 1 is a standard 24dB Octave Linkwitz Riley curve Number 2 is a 48dB Octave Linkwitz Riley As can be seen number 2 is significantly steeper in roll off than number 1 as would be expected However number 3 is a 12dB Octave Butterworth filter with an Elliptical Low Pass filter following it This produces a combined roll off very close to that of the 48dB Octave with the side effect of the response rising again after the initial drop from the pass band 34 User s Manual DSP 4080 Specificati Inputs 4 electronically balance
17. ame ID as the main unit but remember that the maximum total units on any one RS485 network is 128 DSP 4080 RS232 IN fa a or mom IN a s i B a E u L L st w sss Interface Sub Menu Mode RS232 Mode SERIAL SPEED 115200 Stop MIDI Prog Chng Yes Remote ID Number 1 Cable 01 DSP 4080 I TAE RS485 IN A G 2 e Interface Sub Menu Mode RS485 Mode SERIAL SPEED 115200 Stop MIDI Prog Chng Yes Remote ID Number 2 DSP 4080 I oy aras AE SF Interface Sub Menu Mode RS485 Mode SERIAL SPEED 115200 Stop MIDI Prog Chng Yes l Remote ID Number 3 DSP 4080 A A eee G Interface Sub Menu RS485 OU Mode RS485 Mode SERIAL SPEED 115200 Stop MIDI Prog Chng Yes Remote ID Number NN RS485 interface This interface is fitted as standard to DSP 4080 units and is accessed via the 3 pin XLR sockets on the rear of the unit Cables to connect units together or to an RS232 485 converter will need to be wired one to one We recommend the use of standard shielded microphone cables or a balanced feed from a multicore RS485 is a fully balanced system capable of sending data over distances of up to one kilometre Note however that this is the total length of connection The RS485 output of each unit is purely hardwired from the input and so no electrical regeneration of the signal is provided What this means
18. an equilateral triangle indicates the existence of internal components whose substitution may affect safety Class device This equipment must be earthed The lightning and arrowhead symbol warns about the presence of uninsulated dangerous voltage To reduce the risk of electric shock do not remove the cover The device have a standard connector IEC60320 14 with fuseholder for mains Only use this equipment with an appropriate mains cord The connected outer wiring to these terminals requires of its installation by an instructed person and the use of a flexible cable already prepared This symbol on the product indicates that this product should not be treated as household waste Instead it shall be handed over to the appicable collection point for the recycling of electrical and electronic equipment The ON position is indicated in the switch by means of the corresponding standardized symbols IEC 60417 1 1998 and IEC 60417 2 1998 If the apparatus is connected permanently the electrical system of the building must incorporate a multipolar switch with a separation of contact of at least 3mm in each pole Do not expose this device to rain or moisture Do not use this apparatus near water for example swimming pools and fountains Do not place any objects containing liquids such as bottles or glasses on top of the unit Do not splash liquids on the unit IP 20 equipment Clean only with a dry cloth Do not use any solv
19. and 1 x 8 way as applicable to i o configurations They also offer a free assign mode which allows completely flexible routing of any output from any combination of inputs Each input has a gain control variable delay and a further eight bands of fully parametric equalisation The parametric filter bands have a large selection of different filter tyoes available including shelving notch band pass phase and elliptical behaviours Each output has a gain control variable delay high and low pass crossover filters nine bands of fully parametric equalisation polarity switching and additionally a fully featured limiter and a final clip limiter The crossover filters offer slopes of up to 48dB Octave with a variety of responses available Remote control is catered for in the form of RS232 and RS485 ports and multiple user memories are provided for the storage and recall of settings A GPI interface may also be fitted to allow remote memory recalls using simple switch closure apparatus Note that only the RS232 and RS485 interfaces offer full remote control of this product the GPI interface may only be used for memory recall program change purposes Security lock out is available for all controls The DSP 4080 are also equipped with AES EBU digital inouts and outputs and include a sample rate converter capable of accepting anything from 32kHz up to 192kHz They may be controlled externally by XTA s proprietary A Windows
20. aqqasaqasaqaqaqqasqausqqasqqasqasaqqasqasaq qaqa PLOT Cotter irate ete ret erie et rete ea eet forming Sidechain Control Signal In this case the delay between the signal actually going over the threshold the engineer registering the situation and then turning the signal down will be in the order of several hundred milliseconds at best This will only be true if he is not distracted in reality it may be several seconds before any gain reduction is imposed on the signal to bring it under control For an analogue dynamics processor the situation is A much better Controlling the gain electronically and not relying on a human sidechain feedback mechanism it can react much more quickly The red waveform represents the input to the dynamics module with the dotted line showing the ra i a III hr mai ANN threshold for gain control to occur There are several peaks towards the start of this signal that are above the Input of module threshold and so the dynamics processing should react A AAA AAA to these as appropriate In this case reduce the gain Overshoot here as dynamics processor cannot predict or react fast enough to this peak s k A SSS A ELS NO S ROMS IED The blue waveform shows the output of the dynamics module he circled peak demonstrates that the processor has missed the first peak above the APA Ul mms threshold as it is very fast and short but has caught up shortly afterwards k
21. aud rate ID and port selection of the remote interface Configures wireless interface if connected Configure the GPI inputs used for closed contact memory recall hardware option SYSTEM OD a Displays a series of information screens including software version temperature hardware and firmware versions date and time Press NEXT to jump through info Adjust the viewing angle of the screen Adjust the brightness of all the meters and button LEDs Set the threshold for the unit to flash a warning temperature message on the screen when powered up Select the monitoring point for the meters either pre or post mute so meters can be set to work even when outputs muted gt Select the readout units for the Q setting of parametric filters Q is 1 Bandwidth in octaves small Q values mean wide response variations Delay Time gt nee Select the readout units for all delay values either time or distance in feet or metres Select the time that the input CLIP LEDs stay illuminated for after an overload has passed Adjust the real time clock settings SECURITY unit Ge Protect the unit against unauthorised access with a password please see page 25 for gt more details AES EBU s _ gt Switch the outputs of the unit to digital Inputs are selected via rear panel switch gt Information screen showing details of the incoming AES streams sample rate lock User s Manua
22. d Impedance gt 10k ohms CMRR gt 65dB 50Hz 10kHz MUTE ON OFF Outputs 8 electronically balanced Source Imp lt 60 ohms Min Load 600 ohms Max Level 20dBm into 600 ohms MUTE ON OFF Frequency Resp 1dB 20Hz 20kHz 30B O 32kHz Dyn Range gt 116dB 20Hz 20k unweighted Distortion lt 02 1kHz 18dBm Maximum Delay 650 mS Min Step Size 0 3uS Input Gain 60B to 40dB in 0 1dB steps Output Gain 15dB to 40dB in 0 1dB steps Parametric Equalisation 8 per Input 9 Sections per Output Filter Gain 15dB to 300B in 0 1dB steps Freq Range 19 7Hz 32kHz 1 36 octave steps Filter Q BW 0 4 to 128 2 5 to 0 008 Sections switched to shelving response Low frequency 19 2Hz 1kHz High frequency 1kHz 32kHz Shelf gains 15dB in 0 1dB steps Filters 1 of each per output Freq Range HPF 10Hz 16kHz 1 36 octave steps Freq Range LPF 35Hz 22kHz 1 36 octave steps Responses 1 Order 6dB Oct Bessel Butterworth Linkwitz Riley 12 24 48dB Oct Bessel Butterworth 18dB Oct Limiters Program Limiter Threshold 22dBu to 10dBu Attack time 0 3 to 90 milliseconds Release time 2 4 8 16 32 x Attack time D Max Limiter Attack Time 60uS Release Time Slow Medium Fast Display 2 x 24 Character LCD Input meter 4 x 4 point 24dB to digital clip Output meter 8 x 4 point 24dB to 4dB into limit Connectors Inputs 3 pin female XLR Outputs 3 pin male XLR Exte
23. ed Input mutes remain active Changes Only All parameters may be viewed but none may be adjusted This applies to both inputs and outputs All mutes remain active Changes Views No parameters are accessible in effect the EDIT keys do nothing All mutes remain active Changes Mutes All parameters may be viewed but none may be adjusted This applies to both inputs and outputs All mutes are also locked EVERYTHING No parameters are accessible in effect the EDIT and MUTE keys do nothing After selection of the lock type from the list above a four digit security code will be asked for This can be entered by using the FREQ control to select a character and the BACK and NEXT keys to move to the next character Alternatively the EDIT keys can be used to enter a code by pressing any combination of the eight buttons Each EDIT key represents its channel labelling so any combination of A B C D 1 2 3 4 5 6 7 and 8 can be used as a code as shown below Press ENTER to accept code and then re enter it to confirm an e 1 2 3 4 5 6 1 8 Ger A A Y Y J Oo me To prevent external computer control being used to adjust locked settings be sure to set the external interface to OFF before locking out the unit User s Manual 25 DSP 4080 nlocking the Unit To unlock the unit press ENTER and then type the code in This can be entered by using the FREQ control to select a character and the
24. eeping all other peaks under Output of module Control As it is unable to predict what is coming this will always be a failing with analogue dynamics processing ti wll HA AMI MA 28 User s Manual DSP 4080 Predelayed sidechain signal The DSP 4080 s D Max limiter predelays the Main signal arrives slightly later sidechain signal resulting in a zero overshoot limiter which is able to catch all peaks and provide a reliable absolute maximum setting for the output of any channel Level Threshold for Onset of Gain Control The predelayed sidechain is shown in green with the main signal in red As the main signal arrives slightly after the sidechain the output from the unit does not Input of module suffer from the overshoot problem E A aia Remember that this delay is only in the order of SRE a isa s ee ea a A tens of US and is a predelay the sidechain is moved back in time in relation to the main signal Inserting a delay into the main signal path of an analogue dynamics Mt il processor will achieve similar results but with the penalty of delaying the main signal by the amount of Output of module look ahead delay introduced Time NE NN CY L I I The D Max limiter which appears in output lists just following the traditional limiter has only two parameters to adjust Op1 Output 1 ClipLim Rel Medium 10dB Above The relea
25. ent based cleaners Do not install near any heat sources such as radiators heat registers stoves or other apparatus that produce heat The circulation of air must not be blocked Unplug this apparatus during lightning storms earthquakes or when unused for long periods of time Take into account that the nominal AC voltage is the value shown in the equipment 10 according to IEC 60065 2001 If the fuse needs to be replaced please pay attention to correct type and ratings If the cable or the mains plug are damaged they must be replaced Contact the manufacturer to provide you with the necessary spare parts No user serviceable parts inside Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped User s Manual DSP 4080 GARANTIA Todos nuestros productos est n garantizados por un periodo de 24 meses desde la fecha de compra Las garant as s lo ser n v lidas si son por un defecto de fabricaci n y en ning n caso por un uso incorrecto del producto Las reparaciones en garant a pueden ser realizadas exclusivamente por el fabricante o el servicio de asistencia t cnica autorizado Otros cargos como portes y seguros son a cargo del co
26. er the Crossover Sub menu the current ganging set up will be displayed This will either be a preset selection as would be useful in a standard crossover configuration for example lt Crossover Ganging Ganging 1 3 5 7 2 4 6 8 would be a logical ganging arrangement if the crossover was set up as a 4 x 2 way linking the control and adjustment of all Low outputs together and that of all High outputs together However if the crossover has not been set up with a preset routing configuration then it may be required to set up the ganging to compliment this configuration This is achieved using the Free Assign mode This is selected from the preset ganging choices which are Ganging None all outputs independent Ganging Free Assign choose ganging Ganging 1 2 3 4 5 6 7 8 1x8 way Ganging 1 5 2 6 3 7 4 8 4x2 way Ganging 1 3 5 7 2 4 6 8 2x4 way Selecting Free Assign and then pressing ENTER will begin the process of ganging outputs together using the following simple rules gt All outputs are ganged to the lowest number so to gang 3 amp 5 5 must be selected and then ganged 10 3 gt Outputs cannot share more than one ganging set so for example output 3 cannot be ganged to 2 and 4 unless they are ganged together as well Effectively 3 and 4 are ganged to 2 in this case With these rules in mind selecting and setting up gangs is quite straightforward Press MUTE to select channel to
27. erature in C To simplify this equation at 200 Delay in mS 0 955 x Distancia in feet Distance in metres x 2 192 or Distance in feet x 0 955 Note C 0 5555 x F 32 User s Manual 31 DSP 4080 m E Parametric Filter T nd Their A wide selection of filter types has been made available under the PEQ section when editing input or output filters Scrolling through the various filter types is achieved by repeated presses of the ENTER key Note that this will only change filter types if the filter is BYPASSED or the GAIN set to OdB Bypassing the filter then changing types using the ENTER key will automatically set the gain back to OdB Each filter tyoe will be explained in turn in the following section lt Standard Parametric EQ InA InputA PEQ 1 lt gt 1k00Hz Q 3 0 0 0dB The standard parametric band has adjustable frequency Q or Bandwidth and Gain controls These affect a range of frequencies symmetrically about the centre fregency as shown in the graph Various levels of cut and boost are shown to the left along with various Q settings gain boosts only are shown below Remember that Q is 1 Bandwidth so the higher the Q the lower the Bandwidth and the smaller the range of frequencies affected lt Shelving EQ High Shelf shown InA Input A HSF 1 lt 1k00Hz Q 3 0 0 0dB Remember to change filter types press BYPASS to bypass the filter and then use ENTER to select the
28. filter type The shelving EQ has adjustable frequency Q or Bandwidth and Gain controls These affect a range of frequencies from the turnover fregency as shown in the graph For a high shelf frequencies above the turnover frequency will be affected For a low shelf frequencies below the turnover frequency will be affected Remember that Q is 1 Bandwidth so the higher the Q the lower the Bandwidth and the smaller the range of frequencies affected lt Creating a Flat topped EQ Response To create a flat topped EQ filter response such as that shown to the left use two EQ bands BOTH configured as low shelves For an overall BOOST set the Lower frequency filter to BOOST the desired amount and the Upper frequency filter to CUT by the same amount This example shows one filter at 100Hz and the other at 2kHz with the 100Hz filter at 10dB and the 2kHZ filter at 10dB Varying the Q affects the slope of the response values above 0 75 will cause overshoot as shown Assymetrical responses may be achieved by adjusting the Q of each filter independently 32 User s Manual DSP 4080 lt Bandpass filter InA InputA BPS 1 1k00Hz Q 3 0 Bandpass Remember to change filter types press BYPASS to bypass the filter and then use ENTER to select the filter type The bandpass filter has adjustable frequency and Q or Bandwidth controls These affect a range of frequencies symmetrically about the centre freque
29. gnetic compatibility Product family standard for audio video audio visual and entertainment lighting control apparatus for professional use Part 1 Emission o EN 55108 2 1996 Electromagnetic compatibility Product family standard for audio video audio visual and entertainment lighting control apparatus for professional use Part 2 lmmunity User s Manual DSP 4080 User s Manual DSP 4080 Contents Introduction 3 Front panel description 4 Rear panel description O Operating the device 6 Editing audio parameters Input channels 11 Editing audio parameters Output channels 12 Input ganging and output ganging 18 Memory structure 16 Remote control interface operation 18 AES inputs and outputs 23 AES diagnostics and status information 24 Security and locking 29 Advanced audio features 21 Specifications 30 Quick reference 36 Menu system overview Sl Menu system shortcuts 38 Menus in detail 39 User s Manual DSP 4080 User s Manual DSP 4080 Intr ion The DSP 4080 are powerful DSP based audio processors ideally suited for install applications where they combine the functions of a multitude of conventional products in a compact 1U unit with extensive remote control capabilities To achieve this the units have up to four inputs and eight outputs which can be configured in a selection of basic crossover modes 4 x 2 way 2 x 3 way 2 Aux 2 x 4 way
30. he rear panel For channels A amp B use Input A and for channels C amp D use Input C AES output AES outputs are selected through the AES menu AES EBU Sub Menu Output Selection Pressing ENTER and then using BACK and NEXT chooses either Analogue or Digital Press ENTER again to confirm selection The AES outputs are marked on the rear panel Channels 1 amp 2 use Output 1 Channels 3 4 4 use Output 3 Channels 5 amp 6 use Output 5 Channels 7 amp 8 use Output 7 User s Manual 23 DSP 4080 AES diagnostics and status information Also under the AES EBU Sub Menu is the AES Status Information option which can be used to check the incoming sample rate s and confirm that the data is being received correctly Pressing ENTER will first show AES Device Status Vi E V2 E V3 A This display shows the correct operation of the three AES transmitters V1 V2 and V3 The letter after each is the silicon version and is of no importance to the user Pressing ENTER again will show AES Device Status V 96k0 V 96k0 This display shows the status of the two AES receivers input A on the left and Input C on the right The sample rate the unit has been able to lock to is shown or UNLOCKED will be displayed in its place The unit will lock to sample rates from 32kHz up to and including 192kHz The unit s own processing sample rate is 96kHz and AES output data is always at 96kHZ Interna
31. is that the distance from the first RS485 output to the last RS485 input must not exceed 1km in total As this diagram illustrates The combined length of cables 01 02 NN lt 1000 metres Note that this includes any units set up as shadow IDs Units may be connected in a star configuration if required so a long cable may be used and then a hub formed with units all connected to this but we do not recommend daisy chaining these configurations together 20 User s Manual DSP 4080 RS485 connection To use RS485 communication directly from a computer a master unit must be configured to receive RS485 You must have a suitable RS485 port on your computer or a converter connected to the serial port in use This configuration is shown below along with the required unit setup RS232 to RS485 f CONVERTER KIT 9 pin D type l 1 Part Number INT 485 Male to Female NOT Null Modem cable MAX METRE 9 pin D to XLR Male Adapter RS232 485 Laptop or Desktop i Converter Running Audiocore KK Systems Remote Menu K2 RS485 COMI or COM2 Baud Rate 15200 I I XLR to XLR Cable DSP 4080 Interface Sub Menu Mode RS485 Mode SERIAL SPEED 115200 Stop MIDI Prog Chng Yes Remote ID Number 1 OR via wireless with Walkabout Pack Il KIT Please see your manual available from our website Additional DSP 4080s may be set up as slaves with incremental ID numbers as nece
32. iscinas y fuentes por ejemplo No exponga el equipo a salpicaduras ni coloque sobre l objetos que contengan l quidos tales como vasos y botellas Equipo IP 20 Limpie con un pa o seco No use limpiadores con disolventes No instale el aparato cerca de ninguna fuente de calor como radiadores estufas u otros aparatos que produzcan calor Debe instalarse siempre sin bloquear la libre circulaci n de aire Desconecte este aparato durante tormentas el ctricas terremotos o cuando no se vaya a emplear durante largos periodos Tenga en cuenta que la tensi n nominal de alimentaci n es el valor indicado en la etiqueta con un rango 10 de ese valor seg n IEC 60065 2001 Si debe sustituir el fusible preste atenci n al tipo y rango Si el cable o enchufe de alimentaci n est da ado debe ser sustituido por un cable o conjunto especial a suministrar por el fabricante o por su servicio postventa No existen partes ajustables por el usuario en el interior de este equipo Cualquier operaci n de mantenimiento o reparaci n debe ser realizada por personal cualificado Es necesario el servicio t cnico cuando el aparato se haya da ado de alguna forma tal como que haya ca do l quido o alg n objeto en el interior del aparato haya sido expuesto a lluvia o humedad no funcione correctamente o haya recibido un golpe gt P 24 Keep these instructions Heed all warnings Follow all instructions The exclamation point inside
33. l sample rate converters will translate all incoming rates to 96kHz one converter for each AES input This allows the two input streams to be at different rates if necessary 24 User s Manual DSP 4080 ri nd lockin After selecting the Security Sub Menu and pressing ENTER select one of the lock types choosing the most appropriate one for your application As ever ENTER will confirm your selection User Specific Upon pressing ENTER to select this type of lock each parameter group is presented in turn Choose the type of lock as above using the FREQ encoder and press ENTER to confirm each parameter After the last parameter the unit requests a password The description of this operation is given at the end of this section This option allows the user to specify for each type of parameter whether it is to be completely accessible No Lock viewable but not adjustable Control or effectively unavailable Display The ability to operate mutes store or recall memories or even access the menus may also be locked Xover Only All input parameters are available but only the gain trim 6dB is available on the outputs effectively locking all the crossover settings All mutes remain active Xover Trim All input parameters available but no output parameters the crossover sections are completely locked All mutes remain active Xover Trim Mute As for Xover Trim but additionally output mutes are lock
34. l 39 DSP 4080 User s Manual www qasaudio com UM_DSP4080_01_EN
35. mprador en todos los casos Para solicitar reparaci n en garant a es imprescindible que el producto no haya sido previamente manipulado e incluir una fotocopia de la factura de compra WARRANTY All D A S products are warrantied against any manufacturing defect for a period of 2 years from date of purchase The warranty excludes damage from incorrect use of the product All warranty repairs must be exclusively undertaken by the factory or any of Its authorised service centers To claim a warranty repair do not open or intend to repair the product Return the damaged unit at shippers risk and freight prepaid to the nearest service center with a copy of the purchase invoice User s Manual DSP 4080 DECLARACI N DE CONFORMIDAD DECLARATION OF CONFORMITY D A S Audio S A C Islas Baleares 24 46988 Pol Fuente del Jarro Valencia Espa a Spain Declara que el DSP 4080 Declares that DSP 4080 Cumple con los objetivos esenciales de las Directivas Abide by essential objectives relating Directives Directiva de Baja Tension Low Voltage Directive 2006 95 CE Directiva de Compatibilidad Electromagn tica EMC 2004 108 CE Directiva RoHS 2002 95 CE Directiva RAEE WEEE 2002 96 CE Y es conforme a las siguientes Normas Armonizadas Europeas In accordance with Harmonized European Norms o EN 60065 2002 Audio video and similar electronic apparatus Safety requirements O EN 59103 1 1996 Electroma
36. n designing a crossover from scratch These have the advantage of suggested settings for the high and low pass filters to useful basic starting points to filter the different outputs as appropriate for the chosen configuration These may of course be freely modified afterwards should they not suit the requirements exactly The diagrams on the following pages show the connections made between inputs and outputs and the suggested values chosen for the high and low pass filters User s Manual 7 DSP 4080 4 x 2 way crossover As shown each input feeds a pair of outputs odd numbers being the low frequency split and even numbers being the high part of the spectrum Default suggested crossover frequencies are shown by each output LOW OUTPUT 40 1H2z I S2kHz HIGH OUTPUT 1 62kHz 22 2kHz LOW OUTPUT 40 1Hz I S2kHz HIGH OUTPUT 1 62kHz 22k Hz LOW OUTPUT 40 1Hz 1 S2kHz HIGH OUTPUT 1 62kHz 22 2kHz LOW OUTPUT 40 1Hz 15S2kHz HIGH OUTPUT 1 62kHz 22 2kHz 2x3 w r ver Inputs A and B feed three outputs each with output 7 being fed from input C and output 8 from input D Note the Aux outputs are set to full range Default suggested crossover frequencies are shown by each output LOW OUTPUT 22 1Hz 120Hz MID OUTPUT 120Hz 1 82kHz HIGH OUTPUT 1 82kHz 22 2kHz LOW OUTPUT 22 1Hz 120Hz MID OUTPUT 120Hz
37. n to normal default mode after about twenty 20 seconds Repeat the above directions to return to menu mode 6 User s Manual DSP 4080 Routina Opti IP ina BlocI Due to the completely new DSP platform the routing possibilities within the DSP 4080 has been made completely flexible with a matrix available allowing any combination of inputs to be routed to any output The additional DSP power has permitted the inclusion of more processing blocks even considering the extra inputs and outputs and the doubling of sample rate To reduce set up time and aid usability several standard configurations are available as described in a later section This section will outline the processing blocks available in relation to the signal path and explain the various options for routing including the Free Assign mode which opens up completely flexible channel routing Input Channel Makeup The diagram below shows the processing available on each of the four input channels before routing to the matrix ANALOGUE X iH DIGITAL PEO x 2 MAIN DELAY The diagram below shows the processing available on each of the eight output channels after routing from the matrix ANALOGUE PROGRAM CLIP CROSSOVER LIMITE RS Ly DIGITAL Pr tRoutin nfiguration In addition to the ability to assign any combination of inputs to any output a number of preset configurations are provided for use whe
38. ncy as shown in the graph gradually cutting the level but providing no gain Remember that Q is 1 Bandwidth so the higher the Q the lower the Bandwidth and the smaller the range of frequencies affected Note that the response is fundamentally NOT a flat topped response so it is not constructed from a high pass and low pass See previous page for details of how to construct a flat topped filter response lt Notch filter InA Input A NOT 1V 1k00Hz Q 0 75 Notch Remember to change filter types press BYPASS to bypass the filter and then use ENTER to select the filter type The notch filter has adjustable frequency and Q or Bandwidth controls These affect a range of frequencies symmetrically about the centre freqency as shown in the graph Remember that Q is 1 Bandwidth so the higher the Q the lower the Bandwidth and the smaller the range of frequencies affected The notch filter depth varies with bandwidth the wider the filter the lower the depth will be lt All pass filter InA Input A APF 10 1kOOHzZz Q 3 0 Allpass Remember to change filter types press BYPASS to bypass the filter and then use ENTER to select the filter type The allpass filter has adjustable frequency and Q or Bandwidth controls These affect the frequency at which the phase effectively flips 180 and the speed at which this transition occurs The graph shows an allpass filter centred at 1kHz with various Q set
39. nly Please consult the manual supplied with this software for information regarding full computer control Start up procedure Switching on the unit will display a brief message detailing the unit type and software version running and all LEDs will briefly illuminate The unit will then begin its countdown to the wake up procedure during which time the audio will fade up to the level last set Metering will begin to operate when the fade up starts Preliminary Set up The procedure below should be followed when first installing a DSP 4080 Design your crossover To do this press MENU and use the BACK or NEXT key to select Crossover sub menu and then press ENTER Use the BACK or NEXT key to select Design a crossover and then press ENTER Finally use the BACK or NEXT key to select the desired routing and follow the set up wizard to finalise your design Note that when in a menu ENTER is always used to confirm selections The current selection is marked with an asterisk Use the EDIT keys on each output channel with the BACK and NEXT keys to select the high pass filters low pass filters parametrics etc Note that when designing a new crossover the high and low pass filters will be set to default values Use the EDIT keys on each input channel with the BACK and NEXT keys to select the gain delay and parametrics available on each input Information Note that if no action is taken in menu mode the unit will retur
40. nover frequency displayed on the screen is the 3dB point for all types except Linkwitz Riley where the 6dB point is shown If the 6dB point is to be used for the Bessel or Butterworth filter take the required crossover frequency multiply this by the appropriate factor from the following table and then select the closest available frequency on the display Filter Type High pass factors Low pass factors Bessel 2dB Oct Butterworth 2dB Oct Bessel 18dB Oct Bessel 48dB Oct Butterworth 48dB Oct Please note that unlike conventional analogue crossovers crossover points and slopes are set with absolute accuracy since component tolerance problems do not occur Please see page 12 for details of how to adjust the high and low pass crossover filter settings Ti Ali i A further advantage of the DSP 4080 over conventional products is the provision of an independently adjustable delay section for each output This allows the true arrival time from multiple drivers to precisely aligned rather than relying on the compromise phase adjust approach Delay time is adjustable in 0 3uS steps 0 1mm Please see page 12 for details of how to adjust the delay times To convert from units of time i e milliseconds to units of distance use the following formula 1 millisecond 343mm 1 126ft O 20C 68F To calculate time delay for a known distance use Time delay Di Distance in metres 20 06 x V273 C where C is the temp
41. ollow quite the same rules being simpler in its operation Selecting Input and Crossover during a Store will skip any memories that have other combinations in them Selecting Erase for any combination will show only locations that have EXACTLY that combination it is not possible to erase just one part of a combination memory The DSP 4080 has 256 memory locations but these are dynamic in nature obviously a memory containing Input and Crossover settings takes up more space than one containing just Input settings User s Manual 17 DSP 4080 Remo rol interf r RS232 interface This interface is fitted as standard to all units and is accessed via the 9 pin D type connector on the rear of the unit Note that to connect to a computer s COM serial port correctly a one to one cable must be used and NOT a null modem cable A null modem cable has the transmit and receive wires swapped over and will not work The RS232 connection is suitable for distances of about a maximum of 25 feet 7 62 m between the PC and the unit If you experience problems with the connections consider e selecting a slower baud rate e selecting the Use Acknowledge Cmd option in AudioCore see the Remote Menu gt RS232 Configuration window e running the unit via the RS485 interface Note than only one unit at a time may be connected to the computer via this interface Additional units may be daisy chained via the RS485 connections from the back
42. rnal 9 pin DEE connector RS232 RS485 3 pin male XLR out 3 pin male XLR in Power 3 pin IEC Power 60 to 250V 15 50 60Hz Consumption lt 30 watts Weight 3 3kg Net 4 7kg Shipping 7 26lb Net 10 34lb Shipping Size 44 x 482 x 300 mm 1 75 1U x 19 x 11 8 Due to continuing product improvement the above specifications are subject to change Latency 1 5mS analogue in analogue out Y 96kHz User s Manual 35 DSP 4080 Quick reference Editing channels press channel s GAIN key First press accesses that channel s gain To scroll through channel s parameters use the BACK and NEXT keys Second press accesses last viewed parameter Third press will drop back to the default screen Accessing menus press the MENU key Use the BACK and NEXT keys to select the sub menu required and enter the sub menu using the ENTER key This applies to all levels of menu ENTER always confirms selections The Menus and their Contents GLOBAL MEMORY Sub menu Recall Store Erase input and crossover settings or combinations of INPUT SECTION Sub menu Set up input ganging and GEQ Q setting CROSSOVER Sub menu Set up or adjust crossover design including routing and auto limiter setting Also set up output ganging INTERFACE Sub menu Comms interface setup RS232 and RS485 G Pl interface configuration and wireless interface SYSTEM Sub menu Used to view unit s status and select various global options s
43. s 8 amp 9 need to be bypassed or set to OdB If they are not the message Bypass PEQ s 8 amp 9 To Access 48dB Slopes will be displayed OP1 Output 1 LPF gt 32kHz Linkw Riley 48dB The FREQ allows to change the frequency and using Q the slope Output parametric EQ There are nine bands of parametric equalisation available on every output The behaviour of each individual band can be changed to a variety of different filter shapes including high and low shelves notch and bandpass Changing the filter tyoe is achieved by pressing BYPASS to bypass the filter and then oressing ENTER during editing any particular band For more details about the various types of filter available please see page 32 OP1 Output1 PEQ 1 lt gt 1kHz Q 3 0 0dB User s Manual 13 DSP 4080 Information Note that 2 bands each will be lost when using 48dB slope crossover filters resulting in a maximum of 5 bands of EQ when both high and low pass are set to 48dB Octave MENU ENTER BYPASS QUIT SN 14 Output limiter The limiter on each output has adjustable attack and threshold with a release time that is selectable to be a multiplier of the attack time For example as shown below the attack time is 2mS and release is x16 so 32mS The attack and release times can be automatically linked to the high pass filter frequency so that they are set to correct values for the output s frequency
44. s gain on first O O press then last viewed parameter on second press then exit on third press 12 Input meters show dB from clipping point of the analogue to digital converters Yellow 0dB LED illuminates 3dB from clipping Red CLIP LED may illuminate independently from the rest of the meter to show digital overflow All four CLIP LEDs illuminating indicates internal clipping after the ADC e Output Sections Control and pa monitor output signal paths A ee omcosp Red 13 MUTE buttons illuminate w 24 24 24 24 24 when pressed and mute audio for ee Y V Y Y J V J z 3 that channel 14 EDIT buttons iluminate yellow when pressed and access gain on first press then last viewed parameter on second press then exit on third press 15 Output meters show dB from limiting The yellow LED illuminates at the onset of limiting The red LED illuminates at 4dB L 4 into limiting i e 4dB of gain reduction 4 User s Manual DSP 4080 1 fa Power Switch turns the units mains supply off and on sa Mains Fuse located in a finger proof holder adjacent to the mains inlet A ma spare fuse is also located in this holder Mains Inlet connected via a standard IEC socket 2 RS232 RS232 standard via a 9 pin D type connector for connection to a OUT RS485 a PC Data is converted to RS485 standard and relayed to slave units via the RS485 sockets 3 RS485 IN OUT XLR sockets Used for transmission of
45. se time either Fast Medium or Slow and the threshold Note that the threshold is set to be a minimum of 2dB above the threshold of the program limiter setting the threshold to 10dB Above as in the example means that no more than 10dB of overshoot above the threshold of the program limiter will ever be allowed The release time may also be set to follow the High Pass filter of the output this is achieved through the Design a Crossover sub menu and will result in the display changing to show Op1 Output 1 ClipLim Rel Auto 10dB Above User s Manual 29 DSP 4080 tting A rate Limiter Threshol The limiters built into the DSP 4080 are intended to be used for loudspeaker driver protection as opposed to amplifier protection All modern professional power amplifiers designed for live sound use have their own limiters which are tailored to protecting the amplifier from clipping The following section describes how to set up the units limiters to provide exceptional protection against driver overheating and cone over excursion Most speaker systems are given a power rating in Watts RMS This is the maximum continuous power that the system will handle and often appears very conservative In reality as music program is far from continuous in nature the peak power of the system is much higher up to ten times the continuous figure Any limiter which is to protect the driver from damage must be able to fulfil the following tasks
46. ser s Manual DSP 4080 Menu system shortcuts A lot of functions have been assigned menu shortcuts these are accessible directly from the default screen by pressing MENU followed by the appropriate MUTE or EDIT button as shown The entire list of features accessible in this way is given below TD Y Menu lt gt Store Input Memory Store Crossover Memory MENU Store Global Memory Recall Input Memory MENU Recall Crossover Memory Recall Global Memory System Status External Interface Set up Filter Q Bandwidth Display Readout Delay Units Time Distance Readout 000000 0000 06 000000 GOCE GO AES Input Status Design a Crossover 00 06 06 OF Input Ganging Crossover Output Ganging Input Reset Unit Locking TD lt AES Output Mode 38 User s Manual DSP 4080 GLOBAL MEM Recall Input and Crossover Memories or combinations of A Store Input and Crossover Memories or combinations of Erase Input and Crossover Memories or combinations of INPUT SECTION mput anging Gang link inputs together so their parameters track l Start wizard to reset sections of input parameters CROSSOVER o o Set up a new crossover from scratch This selection starts a wizard to guide through the process Also select this to alter the set up of the current crossover O ESAS Gang link outputs together so their parameters track a Un coge so her P INTERFACE gt Starts a wizard to configure the b
47. setup 9 pin D type l l Male to Female NOT Null Modem cable OR J UsB Serial Te j Converter USB 232 DSP 4080 Interface Sub Menu Mode RS232 Mode SERIAL SPEED 115200 Stop MIDI Prog Chng Yes XLR XLR Remote ID Number 1 Laptop or Desktop Running AudioCore DSP 4080 Remote Menu yr RS232 miii COMI to COMI2 Interface Sub Menu Baud Rate 15200 Mode RS485 Mode SERIAL SPEED 115200 Stop MIDI Prog Chng Yes XLR XLR Remote ID Number 2 DSP 4080 RS485 OUT Interface Sub Menu Mode RS485 Mode SERIAL SPEED 115200 Stop MIDI Prog Chng Yes Remote ID Number 3 Additional units may be set up as slaves with incremental ID s User s Manual 19 DSP 4080 Shadow ID Numbers Shadow ID numbers allow extra units to share the same ID and follow the settings of the main ID This is useful for larger systems for example anything above a 4 way stereo system where it is only necessary to set up one side of the system and allow the other unit to track it identically Using the shadow IDs in this way also reduces the apparent system complexity within AudioCore This is due to the fact that shadow ID s NEVER send back any settings to AudioCore and because of this will NOT appear in the list of connected units They can be thought of as listening to and acting upon all information addressed to them but not replying Up to 128 shadow units may be connected and assigned the s
48. sover This is achieved through the Crossover Menu gt Design A Crossover Pressing ENTER will start the crossover design wizard with the first option being to choose the routing The display will show Design A Crossover gt Routing 4 x 2 WAY or whatever the current configuration is set to Press BACK until the display shows Design A Crossover gt Routing Free Assign And then press ENTER The EDIT key will illuminate for output 1 as will any relevant input EDIT keys showing which inputs are feeding output 1 The display will also detail the current combination of inputs feeding this output To change the routing for any output press its EDIT key and then choose the required input channel combination by just pressing the input EDIT keys as appropriate The input combinations can also be stepped through in turn by pressing NEXT or BACK To complete the procedure press ENTER The wizard will continue and if the routing has been changed all outputs will be muted on exit Note that 1 Press EDIT to show input routing selection 2 Press EDIT input keys to select deselect inputs 10 User s Manual DSP 4080 The range of the control over the input gain is 40dB to 6dB in 0 1dB steps Pressing EDIT the display shows IPA InputA Gain Input Gain 6 0dB The GAIN allows to change its value Pressing ENTER to confirm LE a Tk OUT Base delay The maximum a
49. ssary The adapter is available in a kit which includes an RJ 45 adapter the XLR to 9 pin adapter and the converter itself This complete kit is part number INT 485 If you need to make up one of the XLR to 9 pin adapters the pin out is XLR D type 1 1 2 3 3 8 User s Manual 21 DSP 4080 If your laptop or PC does not have a spare serial port or any serial ports for that matter the RS485 converter must be connected through a USB Serial converter The RS485 converter that DAS recommend is available in two types the standard K2 and the more advanced K2 ADE version Only K2 ADE version will work with USB Serial converters as these converters do not support the extra handshake lines used with the standard converter 9 pin D type I I Male to Female USB to RS485 NOT Null Modem cable CONVERTER KIT Part Number OR USB 485 L usB Serial Converter USB 232 9 pin D to XLR Male Adapter RS232 to RS485 CONVERTER KK Systems Laptop or Desktop K2 ADE Running AudioCore Remote Menu RS232 I I XLR to XLR Cable COMI to COM I2 Baud Rate 15200 DSP 4080 Interface Sub Menu Mode RS232 Mode SERIAL SPEED 115200 Stop MIDI Prog Chng Yes DSP 4080 Interface Sub Menu Mode RS485 Mode SERIAL SPEED 115200 Stop MIDI Prog Chng Yes DSP 4080 RS485 OUT Interface Sub Menu Mode RS485 Mode SERIAL SPEED 115200 Stop MIDI Prog Chng Yes
50. tings the higher the Q the faster the transition User s Manual 33 DSP 4080 lt Phase filter InA Input A PHF 10 1k00Hz 150 Phase Remember to change filter types press BYPASS La to bypass the filter and then use ENTER to select the filter type The phase filter has adjustable frequency and phase shift controls This introduces a phase shift that gradually changes from 180 above the centre frequency to the specificed value at the centre frequency and tending towards O below the centre frequency This graph shows the phase shift relative to the input ignoring processing delays in 10 steps the filter will actually provide higher resolution than this operating in 2 steps The filter is centred at 1kHz in this example lt LOW High pass variable Q filter low pass shown InA Input A LPF 1 1k00Hz Q 3 0 LPF VarQ Remember to change filter types press BYPASS to bypass the filter and then use ENTER to select the filter type The low and high pass variable Q filters have adjustable frequency and Q or Bandwidth controls The Q control adjust the damping of the filter so that low Q settings show less overshoot at the turnover frequency but also slower roll off Remember that Q is 1 Bandwidth so the higher the Q the lower the Bandwidth and the smaller the range of frequencies affected The filter is primarily 12dB Octave but in achieving this sort of roll off with
51. ty to delay the audio signal precisely and without extensive complex hardware The entire domain of digital signal processing is based around the combination of delaying multiplying and accumulating numbers representing samples of audio to implement all the filters and dynamics processing we have come to expect today In the case of dynamics processing being able to delay a signal allows the processor module to delay the main signal in relation to the sidechain the signal being monitored relative to the threshold so that it can compensate for peaks prior to the arrival of the main signal Consider the situation of a monitor engineer listening to a band perform Having no access to dynamics processors he has had to resort to manually riding the faders in an attempt to keep control of the levels Should the level of one of the channels on his desk reach an unacceptably high level he will turn it down appropriately Audio Input There is a hidden sidechain in Signal being Gain Control operation even in this case The monitored Element main signal path is fed through the monitor desk and the oain controlled by adjusting the fader The sidechain is formed by the feedback path between the engineer s ears checking the level and his brain instructing his hand Output to to turn the fader down if the Amp Speaker volume goes over the threshold system i he has chosen agaqssaqasaqasaqasassaqqaqaqasaqaaqaaaqasaqasaqqaqaqasqas
52. uch as PEQ Q or bandwidth units delay units and output metering point pre post mute SECURITY Sub menu Used for locking various operations of the unit using a 4 digit code AES EBU Sub menu Switch outputs from analogue to digital and monitor AES input status info AES inputs are switched via rear panel Press MUTE to mute channel Press EDIT to access channel gain press again to view last section edited press again to exit to default screen i 6 6 i EAT Press ENTER to enter menus and confirm selections Press QUIT to exit menus Notes The crossover output settings may be stored independently of the input settings using the Global Memory sub menu The output meters show level in dB from the limiter threshold and the input meters show level from clipping the A D converters pre gain and all EG The high and low pass crossover filters are defined independently on each output channel To access the limiter attack and release parameters select AutoLimiter TimeCst No when designing a crossover To swap parametric filter units between bandwidth BandW and Q enter System Sub menu select Filter Q Bandwidth and select required readout units To swap delay time units enter System Sub menu select Delay Time Distance and select required readout units Pressing an EDIT key flashes corresponding channels routed to from that channel Lai E gt LY
53. vailable delay between any input and output is 650mS For example if the input delay on channel A is set to 500mS the maximum available output delay for any output fed from input A will be 150mS The readout units can be changed between time in milliseconds distance in feet or distance in metres IPA InputA Delay Base Delay 0 00mS Note The delay steps are 1mS 848mm through FREQ or 10uS 4mm through Q encoder Input parametric E The display shows IPA InputA PEQ 1 lt gt 1k00Hz Q 3 0 0 0dB There are eight bands of parameter equalisation available on every input The behaviour of each individual band can be changed to a variety of different filter shapes including high and low shelves notch and bandpass Changing the filter type is achieved by pressing ENTER during editing any particular band For more details about the various types of filter available please see page 32 User s Manual 11 DSP 4080 oq lt e Zi ae qa Pp d I The range of the control over the output gain is 40dB to 15dB in 0 1dB steps Pressing EDIT the display shows OP1 Output1 Gain Output Gain 6 0dB The polarity or phase of each output may be switched individually as below OP1 Output1 Polar Polarity Using GAIN the phase may be changed between inverted phase or non inverted phase tput del The maximum available delay between any input and output is 650mS For example if
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