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26

Master Out

P.A. System

Sub-Group

Insert

Channel

Insert

Fig. 6.2: Inserting the FEEDBACK DESTROYER in single channels and sub-groups

6.4 Using the FEEDBACK DESTROYER in a studio environment

With its highly flexible configuration the FEEDBACK DESTROYER also delivers good results in a professional
studio or home recording environment, as it provides a maximum of twelve fully parametric equalizers per
channel in Parametric EQ mode. Thus, you can realize any application ranging from slight processing to the
total manipulation of music signals. For example, you can use the FEEDBACK DESTROYER as an equalizer
for your studio monitors or to enhance the EQ’s in your mixing console, as these are often only semi-paramet-
ric.

6.5 Using the FEEDBACK DESTROYER as an effects device

With its MIDI interface the FEEDBACK DESTROYER can also be used as a programmable EQ - as a control
unit in a guitar rack or in combination with a keyboard. If you own a MIDI footswitch with an expression pedal,
you can produce interesting wah-wah effects by modifying the filter frequency with the expression pedal
while playing. A similar effect is produced when the FEEDBACK DESTROYER is used to generate “sweep-
ing” sounds. Emphasize or de-emphasize a particular frequency and change the filter frequency continu-
ously via MIDI. The resulting effect sound like a heavily modulating phaser (although the phasing effect is a
different phenomenon from a physical point of view). The advantage in this application is that the sweeping
sound is MIDI-controllable and can be synchronized to, for instance, a sequencer. This effect is very popular
in dance and techno music.

6.6 Special remarks

6.6.1 Level setting

Take care to set the FEEDBACK DESTROYER levels correctly! Low levels deteriorate the dynamics of the
music signal, which results in a poor, weak and noisy sound. On the other hand, excess levels overdriving
the converters in the FEEDBACK DESTROYER should also be avoided. Digital distortion is (unlike its analog
counterpart) very unpleasant as it does not occur gradually but abruptly.

To adjust the input level, switch the device to 

Total Bypass mode (see 4.1) and control the input signal in

such way that the CLIP-LED does not light up. Use the input level meter of the FEEDBACK DESTROYER to
adjust the input signal to about 0 dB.

6. APPLICATIONS

Summary of Contents for FEEDBACK DESTROYER DSP1100

Page 1: ...smitted in any form or by any means electronic or mechanical including photocopying and recording of any kind for any purpose without the express written permission of Behringer GmbH ALL RIGHTS RESERV...

Page 2: ...FEEDBACK DESTROYER DSP1100 Type designation and if applicable Article No which refers to this declaration is in accordance with the following standards or standardized documents x EN 60065 x EN 61000...

Page 3: ...or as marked on the appliance Grounding or Polarization Precautions should be taken so that the grounding or polarization means of an appliance is not defeated Power Cord Protection Power supply cord...

Page 4: ...mix resetting programmed filters automatically s Manual mode allows for setting up to 24 fully parametric filters including Frequency Bandwith and Gain s Single Shot Auto and Manual modes are assignab...

Page 5: ...n we guarantee you uncompromising quality manufactured under ISO9000 certified management system as well as excellent technical and audio properties at an extremely favorable price All of this will en...

Page 6: ...ilters 18 5 2 Manual filters parametric equalizer 18 5 3 Automatic filters 18 5 4 Working with programs 18 5 4 1 Recalling programs 19 5 4 2 Choice of mode 19 5 4 3 Editing filter parameters 19 5 4 4...

Page 7: ...ion instead of having to suppress feedback with graphic EQ s using a trial and error ap proach To fully understand how the Behringer FEEDBACK DESTROYER works you will need to know the meaning of a few...

Page 8: ...of the FEEDBACK DESTROYER For each filter you can apply a boost of 16 dB or a cut of 48 dB i e you can boost the selected frequency by the subjectively perceived factor 3 physically x5 or attenuate it...

Page 9: ...sound reinforcement system Feedback is one of the main problems encountered during live events A feedback loop is produced when a microphone signal is reproduced by an amplifier system to be picked u...

Page 10: ...is being processed especially since graphic EQ s have fixed frequencies based on the so call ISO standard So all graphic equalizers designed to meet the ISO standard feature the same fixed frequencie...

Page 11: ...or all 24 filters s The FEEDBACK DESTROYER calculates the filter quality with such a high precision that nothing but the feedback signal will be filtered while retaining the original music signal This...

Page 12: ...ight tolerances high grade switches as well as other select components The FEEDBACK DESTROYER was manufactured using SMD technology Surface Mounted Device These sub miniature components known from aer...

Page 13: ...to the mains please make sure that your local voltage matches the voltage required by the unit The fuse holder on the female mains connector has 3 triangular markers with two of these triangles oppos...

Page 14: ...pical home recording level of 10 dBV and the professional studio level of 4 dBu The LED indicators on the front panel help you adjust the operating level as optimally as possible In order to be able t...

Page 15: ...e R key to select the right audio channel If you wish to process the left and right channels simultaneously Couple mode press both Engine keys at the same time 5 Press the Frequency key to select the...

Page 16: ...the front panel 13 After power up the LED display reads the number of the preset last used This clearly legible 2 1 2 digit numeric display has plus minus indicators to show that parameters are incre...

Page 17: ...lways be assured 18 The FEEDBACK DESTROYER was designed for operation with unbalanced mono phone jacks 6 3 mm Each audio channel left right has a phone jack for incoming signals If you only want to us...

Page 18: ...ack frequencies Having detected such a frequency the filter automatically configures its parameter to suppress feedback as effi ciently as possible As the filter is locked to the detected frequency th...

Page 19: ...de by simply pressing the FILTER MODE key and turning the jog wheel The display message L locked informs you that a filter from the Single Shot mode is already suppressing a feedback You can unlock su...

Page 20: ...the jog wheel to select another preset before you press the STORE key a second time 5 5 MIDI control Use the MIDI key combination to select the MIDI parameters you wish to adjust For this purpose pres...

Page 21: ...MIDI system s MIDI IN Any MIDI data sent to the FEEDBACK DESTROYER sequencer MIDI footswitch etc are received via the MIDI IN jack For example if you wish to use the FEEDBACK DESTROYER as an effects...

Page 22: ...to the resolution of the grid gives rise to errors and these errors are the cause of quantizing noise Unfortuanetly quantizing noise has the characteristic of being much more noticeable and unpleasan...

Page 23: ...take the situation where a 4 bit word has the positive maximum value of 0111 and add to it the smallest possible value of 0001 in other words the smallest increase in amplitude possible the addition...

Page 24: ...ositive influence on both sound and loudness of the monitors because filtering interference makes the monitor sound more transparent and feedback suppression enables you to increase the volume level o...

Page 25: ...channels and sub groups If you want to make sure that deliberately produced feedback signals such as guitar feedback are not eliminated you should try inserting one or several FEEDBACK DESTROYER s in...

Page 26: ...ency with the expression pedal while playing A similar effect is produced when the FEEDBACK DESTROYER is used to generate sweep ing sounds Emphasize or de emphasize a particular frequency and change t...

Page 27: ...aders until feedback comes in Without the FEEDBACK DESTROYER you could not increase the volume level of your system any further With your FEEDBACK DESTROYER how ever you can considerably enhance the s...

Page 28: ...Hz 32 kHz 286 289 296 302 309 315 324 332 341 349 358 32 kHz 40 kHz 362 366 375 383 392 400 410 420 430 440 450 40 kHz 50 kHz 455 460 470 480 490 500 513 526 539 552 565 50 kHz 63 kHz 572 578 591 604...

Page 29: ...k Commands X X X X Aux Messages Local ON OFF All notes OFF Active Sense Reset X X X X X X X X Notes O YES X NO Mode 1 OMNI ON POLY Mode 2 OMNI ON MONO Mode 3 OMNI OFF POLY Mode 4 OMNI OFF MONO Tab 8 1...

Page 30: ...nding on the gain of the feedback Time required to 0 5 sec typical at 1 kHz eliminate feedback Parametric Equalizer Type 12 independent filters per channel Frequency Range 20 Hz to 20 kHz adjustable i...

Page 31: ...heide Shipments without freight prepaid will not be accepted 4 WARRANTY REGULATIONS Warranty services will be furnished only if the product is accompanied by an original retail dealer s invoice Any pr...

Page 32: ...to anyone who may subsequently purchase this product No other person retail dealer etc shall be entitled to give any warranty promise on behalf of BEHRINGER INTERNATIONAL 6 CLAIM FOR DAMAGES Failure o...

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