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4. CONTROLS
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Fig. 4.1: COMPOSER PRO front panel
The Behringer COMPOSER PRO has two identical channels. Each channel is equipped with 8 backlit push-
buttons, 8 rotary controls and 30 LEDs. The COUPLE switch is for stereo operation:
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The COMPOSER PRO converts to stereo mode by engaging the COUPLE switch, where the left
channel assumes the control of both audio channels, i.e. the control signal of channel 2 is replaced
with that of channel 1. By pressing the COUPLE switch, you override all the controls and switches of
channel 2 with the exception of the IN/OUT, SC MON, SC EXT and SC Filter switches as well as the
PEAK LIMITER control. The controls of channel 1 take over all functions of channel 2.
4.1 Expander/Gate Section
Fig. 4.2: Control elements of expander/gate section
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Use the THRESHOLD control to determine the threshold point below which expansion occurs. The
range of this control is from OFF to +15 dB.
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The RATIO control is used to adjust the expansion ratio when the signal drops below the threshold
value. This control determines whether the unit works as an expander (low ratio level) or as a gate
(1:8). The expansion ratio can be set from 1:1 to 1:8.
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When a signal below the threshold value is applied, the+ LED lights up, while the--LED lights up
when expansion occurs.
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To optimally adapt the expander/gate to the program material, the RELEASE switch allows for selecting
a SLOW or FAST release time. When you engage this switch, the expander responds with a slow
release. As a general rule, percussive material with little or no ambience is processed using the FAST
release mode, whereas signals with long decay or with heavy ambience require the SLOW release
mode.
4. CONTROLS
