Behringer MDX4400 manual Controls, Front Panel Control Elements

MULTICOM PRO MDX4400

4. CONTROLS

Fig. 4.1: MULTICOM PRO front panel

The BEHRINGER MULTICOM PRO has four identical channels. Each channel is equipped with 4 backlit push- buttons, 4 rotary controls and 17 LED’s. The COUPLE switches are for stereo operation of two channels.

4.1 The Front Panel Control Elements

7 11 8 10

1

6

2

5

3

4

9

1

Fig. 4.2: Control elements on the front panel

The THRESHOLD control sets the threshold point for the compressor section. It has a range of -40 to +20 dB. If the channel is switched to INTERACTIVE mode (Interactive Knee Adaptation), a “Soft Knee” characteristic is applied to the signal exceeding the threshold point by a maximum of 10 dB. Above 10 dB, the signal would experience “Hard Knee” compression.

2

The RATIO control determines the ratio between the input and output level for all signals exceeding the threshold point. If the INTERACTIVE mode is used, this control determines the ratio between input and output levels for signals exceeding the threshold point by more than 10 dB. The control range can be adjusted from 1:1 to oo:1.

3

The OUTPUT control allows for the increase or decrease of the output signal by a maximum of 20 dB. Thus, a level loss due to the compression or limiting process can be compensated for.

+Please note when using the THRESHOLD control of the Peak Limiter section, that the OUTPUT control of the Compressor section precedes the Peak Limiter section. If the OUTPUT control is set too high, this can result in continuous peak limiting (see item 9 “THRESHOLD control”).

4

The IN/OUT switch activates the corresponding channel. This switch acts as a so-called “hard-bypass” switch, which means that when the switch is OUT, the input jack is directly linked to the output jack. Normally, this switch is used to perform a direct A/B comparison between the unprocessed and the compressed or limited signals.

5

6

Press the INTERACTIVE switch to change from “Hard Knee” to IKA characteristics. IKA provides a very subtle and musical compression of the program material and should therefore be used whenever compression should be more or less inaudible.

The SC FILTER switch activates a highpass filter in the sidechain path and thus limits the influence of low frequencies on the MULTICOM PRO’s control processes.

4. CONTROLS 13