dsp-2040 user manual - DAS Audio
Contents
1. The DSP 2040 s D Max limiter predelays the 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 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 suffer from the overshoot problem Remember that this delay is only in the order of 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 processor will achieve similar results but with the penalty of delaying the main signal by the amount of look ahead delay introduced lists just following the traditional limiter has only two Op1 Output 1 ClipLim Rel Medium 10dB Above The release 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 222. 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 MEMORY IO alin i 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 CROSSOVER MEMORY MEMORY INPUT MEMORY MEMORY 2 y MEMORY 3 MEMORY 4 MEMORY 5 MEMORY 6 CROSSOVER MEMORY MEMORY 7 INPUT MEMORY CROSSOVER MEMORY MEM ORY 8 D I INPUT MEMORY MEMORY 9 By MEMORY IO Note that storage and erasure of memories does not follow 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 2040 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 2040 Securit lock After selecting the Security Sub Menu and pressi
3. 2 and 3 designated low mid and high respectively with Input B unused Output 4 Aux is a full bandwitch output by default LOW OUTPUT 22 1 Hz 120Hz MID OUTPUT 120Hz 1 82kHz HIGH OUTPUT 1 82kHz 22 2kHz AUX 10Hz 32kHz OUTPUT 8 User s Manual DSP 2040 1x 4 way crossover Inputs A is fed to all four outputs with input B unused The crossover points can be adjusted as desired Note Input B will be muted and cannot be unmuted OUTPUT 1 15Hz 149Hz OUTPUT 2 149Hz 1 31kHz OUTPUT 3 1 31kHz 8kHz OUTPUT 4 3kHz 22 2kHz User s Manual 9 DSP 2040 Free Assign Routing If none of the preset configurations are appropriate to the required system setup it is possible to manually select the routing of the crossover 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 2 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 EDI
4. Controlling the gain electronically and not relying on a human sidechain feedback mechanism it can react much more quickly Level Threshold for Onset of Gain Control The red waveform represents the input to the dynamics module with the dotted line showing the threshold for gain control to occur There are several Time UN AAT LATE AU LU f IN Il Input of module i LL At Overshoot here as dynamics processor cannot predict or react fast enough to this peak Time IL Output of module M tall al LA AL HI M wi AN i WA peaks towards the start of this signal that are above the threshold and so the dynamics processing should react to these as appropriate In this case reduce the gain The blue waveform shows the output of the dynamics module The circled peak demonstrates that the processor has missed the first peak above the threshold as it is very fast and short but has caught up shortly afterwards keeping all other peaks under control As it is unable to predict what is coming this will always be a failing with analogue dynamics processing Manual de Usuario 21 DSP 2040 mm Predelayed sidechain signal Fa Main signal arrives slightly later Threshold for Onset of Gain Control l i Nh NL hil Time 1 iki IN I i j NT i Input of module iy ih All Li i ut Time Output of module The D Max limiter which appears in output parameters to adjust
5. MUST BE EARTHED 3 Audio Outputs 3 pin XLR sockets are provided for each channel All are fully balanced pin 2 hot pin 3 cold pin 1 screen 4 Audio Inputs 3 pin XLR sockets are provided for each channel All are fully balanced pin 2 hot 3 cold 1 screen WARNING Class device This equipment must be earthed If the cable or the mains plug are damaged they must be replaced Always replace the fuse with the correct type and rating as shown on the rear panel legend User s Manual 5 DSP 2040 The following operating information covers setup and control of the DSP 2040 via the front panel controls only 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 2040 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 routingand follow the set up wizard to finalise your design Note that when in a menu ENTER
6. Manual de Usuario DSP 2040 Setting A te Limiter Threshold The limiters built into the DSP 2040 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 e Have an attack time which is calculated to allow transients through but keep the RMS level below the speaker manufacturer s specification 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 manuall is the threshold and it is crucial that this is done correctly Conside
7. 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 gt Lt Keep these instructions Heed all warnings Follow all instructions The exclamation point inside 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 conne
8. 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 return to normal default mode after about twenty 20 seconds Repeat the above directions to return to menu mode 6 User s Manual DSP 2040 Due to the completely new DSP platform the routing possibilities within the DSP 2040 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 diag
9. 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 Input A 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 filter type The shelving EQ has adjustable frequency Q or Bandwidth and Gain controls These affect a range of frequencies from the turnover freqency 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 th
10. T 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 DSP 2040 SPEAKER MANAGEMENT SYSTEM 1 Press EDIT to show input routing selection 2 Press EDIT input keys to select deselect inputs 10 User s Manual DSP 2040 Editin rameters In hannel Input gain 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 Use the GAIN allow to change its value Pressing ENTER to confirm K Y RS JE MENU eur 5 B lel x The maximum available 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 Input A Delay Base Delay 0 00mS Note The delay steps are 1mS 343mm through FREQ or 10uS 4mm through Q encoder Input parametric EQ The display shows IPA Input A PEQ 1 lt gt 1k00Hz Q 3 0 0 0dB There are eight bands of parameter equalisation available on every input The
11. User s Manual DSP 2040 DECLARACION 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 2040 Declares that DSP 2040 Cumple con los objetivos esenciales de las Directivas Abide by essential objectives relating Directives Directiva de Baja Tensi n Low Voltage Directive 2006 95 CE o Directiva de Compatibilidad Electromagn tica EMC 2004 108 CE o 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 55103 1 1996 Electromagnetic compatibility Product family standard for audio video audio visual and entertainment lighting control apparatus for professional use Part 1 Emission O EN 55103 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 2040 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 r
12. at 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 100HZz 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 Manual de Usuario 25 DSP 2040 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 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 26 Manual de Usuario DSP 2040 Specificati Input
13. ayo 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 piscinas 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
14. bands have a large selection of different filter types available including shelving 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 A GPI interface may also be fitted to allow remote memory recalls using simple switch closure apparatus Security lock out is available for all controls 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 32kHz 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
15. behaviour of each individual band can be changed to a variety of different filter shapes including high and low shelves 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 27 User s Manual 11 DSP 2040 Editin rameters hannel tput gain 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 Output polarity The polarity or phase of each output may be switched individually as below 4 BACK OP1 Output 1 Polar IA TATE SN Polarity aS Using GAIN the phase may be changed between inverted phase or non inverted phase The maximum available 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 OP1 Output1 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 2040 Output high pass filter 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 h
16. ceeded 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 22 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 2040 In nging an nain 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 under 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 2 4 6 would be a logical ganging arrangement if the crossover was set up as a 2 x 3 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
17. ctor 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 6041 7 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 solvent 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 show
18. d then pressing ENTER during editing any particular band For more details about the various types of filter available please see page 27 OP1 Output1 PEQ 1 lt gt 1kHz Q 3 0 0dB User s Manual 13 DSP 2040 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 Output limit 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 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 Output 1 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 t D Max Clip limiter 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 ex
19. e XLR Outputs 3 pin male XLR External 9 pin DEE connector RS232 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 175 10 x 19 x 11 8 Due to continuing product improvement the above specifications are subject to change Latency 1 5mS analogue in analogue out 96kHz Manual de Usuario 2 www qdasaudio com Z ai z O N fal ep a
20. e 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 Time Alignment A further advantage of the DSP 2060 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 3S 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 348mm 1 126ft 20C 68F To calculate time delay for a known distance use Time delay Distance in metres 20 06 x V273 C where C is the temperature 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 24 Manual de Usuario DSP 2040 p tric Filter T Their U A wide selection of filter tyoes 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
21. elay 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 main signal path is fed through Element the monitor desk and the gain 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 he has chosen 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 much better
22. 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 with security lockout User s Manual 3 DSP 2040 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 parameters as they are edited and all menu selections DSP 2040 SPEAKER MANAGEMENT SYSTEM Control Keys Selection and adjustment of parameters 4 BACK NEXT 2 NEXT key moves forward through list of parameters x 3 BACK key moves backwards through list of parameters MENU ENTER 4 MENU key activates the main menu a second press selects the last menu edited 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 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 8 Rotary Encoders Three velocity sensitive encoders adjust the relevan
23. igh 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 amp 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 Output low pass filter The low pass crossover filter on each output has a frequency range of 35 1HZ up to gt B2kHz 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 bands 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 Output1 LPF gt 32kHz Linkw Riley 48dB The FREQ allows to change the frequency and using Q the slope tout parametric E 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 Changing the filter type is achieved by pressing BYPASS to bypass the filter an
24. 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 2040 Mem r r The DSP 2040 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 amp Xover STORE a Memory Type Input amp Xover ERASE a Memory 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 inout and crossover memories MEMORY CROSSOVER MEMORY MEMORY e MEMORY 3 MEMORY 4 MEMORY 5 MEMORY 6 MEMORY 7 INPUT MEMORY CROSSOVER MEMORY MEMORY 8 INPUT MEMORY MEMORY 9 MEMORY IO 16 User s Manual DSP 2040 Through
25. limiter against the driver protection requirements It does also mean that an incorrectly set limiter may sound awful 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 lt 10Hz 31Hz x16 720mS 2kHz 32kHz x16 4mS ms ms ms 20 Manual de Usuario DSP 2040 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 ability 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 d
26. n 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 2040 GARANTIA Todos nuestros productos estan garantizados por un periodo de 24 meses desde la fecha de compra Las garantias solo seran validas si son por un defecto de fabricaci n y en ningun 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 comprador 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 inco
27. ng 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 locked 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 acti
28. on 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 20 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 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 Manual de Usuario 19 DSP 2040 p Limit 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
29. r the table below Ratio Vrms Pwr 8 Q Pwr 4 2 Pwr 2 2 188 39 30 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 Manual de Usuario 23 DSP 2040 Crossover Filter Slopes It should also be noted that the turnover 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 0 69 Butterworth 2dB Oct 0 76 J Butterworth 24dB Oct Please note that unlike conventional analogu
30. ram below shows the processing available on each of the four input channels before routing to the matrix PEO x 6 MAIN DELAY tput Channel Mak The diagram below shows the processing available on each of the eight output channels after routing from the matrix HPF LPF PEO x 9 DELAY GAIN PROGRAM CLIP ANALOGUE a CROSSOVER r UMER OUTPUT In addition to the ability to assign any combination of inputs to any output a number of preset configurations are provided for use when 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 2040 2 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 crossover frequencies are shown by each output LOW OUTPUT 40 1 Hz 1 62kHz HIGH OUTPUT 1 62kHz 22 2kHz LOW OUTPUT 40 1 Hz 1 62kHz HIGH OUTPUT 1 62kHz 22 2kHz 1x 3 way crossover Aux This format feeds input A to outputs 1
31. rrect 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 2040 Contents Introduction 3 Front panel description 4 Rear panel description 5 Operating the device 6 Editing audio parameters Input channels 11 Editing audio parameters Output channels 12 Input ganging and output ganging 15 Memory structure 16 Security and locking 18 Advanced audio features 20 Specifications 27 User s Manual DSP 2040 User s Manual DSP 2040 Introduction The DSP 2040 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 To achieve this the units have up to two inputs and four outputs which can be configured in a selection of basic crossover modes 2 x 2 way 1 x 3 way 1 Aux and 1 x 4 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
32. s 2 electronically balanced Impedance gt 10k ohms CMRR gt 65dB 50Hz 10kHz MUTE ON OFF Outputs 4 electronically balanced Source Imp lt 60 ohms Min Load 600 ohms Max Level 20dBm into 600 ohms MUTE ON OFF Frequency Resp 20B 20Hz 20kHz 30B O 32kHz Dyn Range gt 116dB 20Hz 20kHz unweighted Distortion lt 02 1kHz 18dBm Maximum Delay 650 mS Min Step Size 0 3uS Input Gain 6dB 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 30dB 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 32kKHz Shelf gains 15dB in 0 1dB steps High and Lowpass Filters 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 Limit 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 2 x 4 point 24dB to digital clip Output meter 4 x 4 point 24dB to 4dB into limit Connectors Inputs 3 pin femal
33. t parameters as displayed on the screen Input Sections Control and monitor input signal paths Red 9 MUTE buttons illuminate when pressed and mute audio for that channel 10 EDIT buttons illuminate yellow when pressed and access gain on first press then last viewed parameter on second press then exit on third press 11 Inout meters show dB from clipping point of the analogue to digital converters Yellow OdB 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 a Output Sections Control and monitor output signal paths Red 12 MUTE buttons illuminate when pressed and mute audio for that channel 13 EDIT buttons illuminate yellow when pressed and access gain on first press then last viewed parameter on second press then exit on third press 14 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 2040 Rear panel ription 1 Power Switch turns the unit s mains supply off and on Mains Fuse located in a finger proof holder adjacent to the mains inlet A spare fuse is also located in this holder Mains Inlet connected via a standard IEC socket OUTPUT 4 OUTPUT 3 OUTPUT 2 OUTPUT 1 QWPMENT
34. 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 1x6 way Ganging 1 3 5 2 4 6 2x3 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 4 5 5 must be selected and then ganged to 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 gang MUTE begins to flash d 4 re DSP 2040 SPEAKER MANACEMENT SYSTEM ECNT CA Press EDIT keys to gang SN 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
35. ve 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 Entering the Password t mplete the Lockin ration 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 1 2 3 and 4 can be used as a code as shown below Press ENTER to accept code and then re enter it to confirm OSP 2040 SPEAKER MANAGEMENT SYSTEM 18 Manual de Usuario DSP 2040 Unlocking 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 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 For nthe P word Don t panic Your unit can still be unlocked In an attempt to improve the security system on the DSP 2060 and prevent a standard master password from becoming comm
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