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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 
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’.

Output “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 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 22.

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.

OP1     Output 1     Limiter

Atk=2.0mS   Rel=x16   +22dB

OP1     Output 1     ClipLim

Rel.=Medium   2dB Above

Using FREQ, the attack time change. Through Q the release time change, 

and through GAIN the threshold change. To complete the procedure, press 
ENTER.

Using FREQ, the release time change, and through GAIN the threshold 

change. To complete the procedure, press ENTER.

DSP-2040

User’s Manual

Summary of Contents for DSP-2040

Page 1: ...uipo lea la secci n Precauciones de seguridad de este manual Conserveestemanualparafuturasconsultas Before operating the device please read the Safety precautions section of this manual Retainthismanu...

Page 2: ...60065 2001 If the fuse needs to be replaced please pay attention to correct type and ratings Unplug this apparatus during lightning storms earthquakes or when unused for long periods of time Do not i...

Page 3: ...icitar reparaci n en garant a es imprescindible que el producto no haya sido previamente manipulado e incluir una fotocopia de la factura de compra All our products are warrantied against any manufact...

Page 4: ...al use Part 2 Immunity l EN 50581 2012 Technical documentation for the assessment of electrical and electronic products with respect to the restriction of hazardous substances Cumple con los objetivos...

Page 5: ...cription Rear panel description Operating the device Editing audio parameters Input channels Editing audio parameters Output channels Input ganging and output ganging Memory structure Security and loc...

Page 6: ...DSP 2040 User s Manual...

Page 7: ...erface 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...

Page 8: ...o the default screen 2 3 4 5 ENTER 6 BYPASS 7 QUIT 8 Rotary Encoders Three velocity sensitive encoders adjust the relevant parameters as displayed on the screen Input Sections Control and monitor inpu...

Page 9: ...nnector for connection to a PC 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 fo...

Page 10: ...NTER 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...

Page 11: ...nput Channel Makeup The diagram below shows the processing available on each of the four input channels before routing to the matrix Output Channel Makeup The diagram below shows the processing availa...

Page 12: ...LOW OUTPUT 40 1Hz 1 62kHz HIGH OUTPUT 1 62kHz 22 2kHz HIGH OUTPUT 1 62kHz 22 2kHz 2 x 2 way crossover As shown each input feeds a pair of outputs odd numbers being the low frequency split and even num...

Page 13: ...ll 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 OU...

Page 14: ...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 feed...

Page 15: ...Input parametric EQ The display shows IPA Input A Gain Input Gain 6 0dB IPA Input A Delay Base Delay 0 00mS IPA Input A PEQ 1 1k00Hz Q 3 0 0 0dB Use the GAIN allow to change its value Pressing ENTER...

Page 16: ...non inverted phase Output delay 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...

Page 17: ...e slope High Low Freq Overlap will be displayed Note that to access the 48dB Octave filters parametric bands 6 7 need to be bypassed or set to 0dB If they are not the message Bypass PEQ s 6 7 To Acces...

Page 18: ...er 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 d...

Page 19: ...g 3 4 4 must be selected and then ganged to 3 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 a...

Page 20: ...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 Selecting to STORE or RECALL using th...

Page 21: ...hange all the parameters 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 memori...

Page 22: ...tput 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 A...

Page 23: ...ntarily 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...

Page 24: ...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...

Page 25: ...urning 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 imp...

Page 26: ...similar results but with the penalty of delaying the main signal by the amount of look ahead delay introduced The D Max limiter which appears in output lists just following the traditional limiter has...

Page 27: ...speaker manufacturer s specification Have a release time which is sufficiently long to avoid the limiter itself modulating the program Be intelligent enough to adjust the envelope of the limiter accor...

Page 28: ...ossover 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...

Page 29: ...gh Shelf shown InA Input A HSF 1 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 freque...

Page 30: ...l 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 Bandwi...

Page 31: ...ad 600 ohms Max Level 20dBm into 600 ohms MUTE ON OFF Frequency Resp dB 20Hz 20kHz Dyn Range 116dB 20Hz 20kHz unweighted Distortion 02 1kHz 18dBm Maximum Delay 650 mS Min Step Size 0 3uS Input Gain 6d...

Page 32: ...88 DAS 4 USA DAS Audio Asia PTE LTD 3 Temasek Avenue Centennial Tower 34 36 Singapore 039190 Tel 65 6549 7760 DAS Audio Group S L C Islas Baleares 24 46988 Fuente del Jarro Valencia SPAIN Tel 34 96 13...

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