Page 10
Some way of restoring the signal to its pre-compressed level is required. The Gain control provides
adjustment to restore output level after compression.
GAIN can also be used to level match between equipment connected to the GCX20. GAIN range is -
20dB to +20dB.
BYPASS
switch
Switches the compressor in and out of the signal path so that comparisons can be made between
compressed and un-compressed signals.
Channel 1 BYPASS switch operates on both channels in LINK mode.
AUTO
switch
The GCX20 compressor has two program dependant Auto Attack/Release settings -
SLOW mode (switch 'out')
Attack = 10mS to 100mS
Release = 3S
FAST mode (switch 'in')
Attack = 5mS to 70mS
Release = 0.5S
In SLOW mode the compressor reacts to the average level of the input signal and is the normal
setting for most signal types. Fast transient signal peaks will pass unaffected.
Using FAST attack, the compressor reacts more to signal peaks and will control all but the fastest
transients.
SLOW mode has been tailored for mixed program material. FAST mode is suitable for solo
instruments.
GAIN REDUCTION
meter
The led meter displays the applied gain reduction (GR) in dBs.
In BYPASS the display is dimmed but still displays the amount of gain reduction which would be
applied if the compressor were to be switched in.
In LINK mode Channel 1 meter displays the Gain Reduction for both channels.
STEREO
switch
In link mode Channel 1 becomes the MASTER controller for both channels. The Compressor
controls, switches and leds on Channel 2 are in-operative in LINK mode.
POWER
indicator
The green POWER indicator is lit whenever power is applied to the unit.
