Инструкции Пользователя для Behringer Autocom Pro-XL MDX1600

MULTICOM PRO-XL MDX4600/COMPOSER PRO-XL MDX2600/AUTOCOM PRO-XL MDX1600 User Manual

Once you have checked the EQ setting, switch off SC MON and adjust the 

THRESHOLD, so that the compressor responds to the interference signals only.

SC EXT switch

IN

SC MON switch

OUT

INTERACT KNEE switch

OFF

LO CONTOUR switch

OUT

THRESHOLD control

+20 dB

RATIO control

4:1

AUTO switch

OUT

ATTACK control

0.3 msec

RELEASE control

150 msec

OUTPUT control

0 dB

Tab. 3.1: Eliminating interference with an inserted equalizer (basic settings)

Conversely, you can also use your COMPOSER PRO-XL or  AUTOCOM PRO-XL 

to highlight solo instruments or vocal tracks acoustically in a less than 

perfect recording.
Please note that in this application only the amplitudes of the selected 

frequencies should be reduced in level. 
Compression produces a subjective volume reduction of the entire program 

material. Only those frequencies selected on the equalizer will cause NO 

compression and thus they seem to be emphasized acoustically. This inverse 

type of compression helps you make instruments stand out even in 

low-level passages.

If you feed the audio signal directly into the SC RETURN input and at the same 

time route it to the audio input via a delay unit, the dynamics processor will work 

“anticipatorily”. With a bit of tweaking you can achieve “zero” attack effects for 

specific frequencies. Longer delays produce an effect that is similar to an audio 

tape being played back in reverse.

You can use the COMPOSER PRO-XL and AUTOCOM PRO-XL to lower music to a low 

background level as soon as a speaker speaks into the microphone. In this type of 

application the compressor section functions like an automatic fader controlled 

by the speaker’s microphone, which is also connected to the SC RETURN input via 

a preamplifier. Music and microphone signal are then mixed with the help of a 

console. This application is called “voice over” compression or “ducking”, and is 

used frequently in discotheques or radio stations.

This technique is used to give a rhythm track more “punch” by synchronizing the 

rhythm instruments after recording. Only the expander/gate section is required, 

the compressor and/or peak limiter remain disabled. Insert the bass guitar track 

into the audio path of the COMPOSER PRO-XL (or AUTOCOM PRO-XL), and route 

the bass drum to the SC RETURN input. Activate the SC EXT function to trigger 

the bass guitar with the kick drum, i.e. the kick drum exceeds the expander 

threshold, allowing the bass guitar signal to pass until the level has dropped 

below threshold again. 

Dynamics processors are usually inserted into the insert paths of a mixing 

console, because their signals are not added to the mix (unlike reverb or phaser 

effects, which are fed into the signal path via the aux busses).

Mixer

Return

Send

Out

COMPOSER PRO-XL MDX2600

In

Channel Insert

Fig. 4.1: Inserting a dynamics processor into the insert path

You can also insert the COMPOSER PRO-XL, MULTICOM PRO-XL or AUTOCOM 

PRO-XL into a sub-group insert (miking of drums!) or to process the mix output 

of the console (Main Out and/or Main Inserts). Here, too, the processor should be 

inserted into an insert path, so that you can fade out the overall signal by closing 

the main faders on the console.

COMPOSER PRO-XL MDX2600

DAT Recorder

Send

Mixer

L

R

L

R

Main Out

Main Insert

Return

Return

Send

Fig. 4.2: Compressing a main mix signal with the MDX2600 

If you wish to use the dynamics processor as part of a P.A. system integrating 

an active frequency crossover (e.g. BEHRINGER SUPER-X PRO CX2310), you can 

connect it between the mixing console output and the crossover input, 

or between the crossover and the power amps. In the latter configuration you 

can process individual frequency ranges specifically (multi-band compression) 

to prevent a few high-energy frequencies triggering the compressor to process 

the entire frequency range. The illustration below shows how to set up this 

configuration with the BEHRINGER MULTICOM PRO-XL MDX4600.