Owner`s manual

14
QUAD COMP/GATE
QUAD-COMP/GATE
15
Owner’s Manual
Owner’s Manual
22. RELEASE knob
In gate mode, this knob adjusts the amount of time for
the gate to close and begin attenuation, after the signal
drops below the threshold and the hold time has passed.
Use this knob to adjust the Release time from 50 ms
to 3 seconds (fully clockwise).
23. HOLD knob
This adjusts the amount of time the gate stays open
for, after the signal drops below the threshold, and
before attenuation begins.
Use this knob to adjust the Hold time from 0 ms to
5 seconds (fully clockwise).
24. RANGE knob
If the EXP button is pressed, this knob is disabled and
has no effect. Otherwise:
This allows you to set the amount of attenuation that
occurs when the signal drops below the threshold.
Use this knob to adjust the Range from 0 dB to 60 dB
(fully clockwise). For example, if you set it to 10 dB, all
signals lower than the threshold will be reduced 10 dB.
25. BYPASS button
Press this button to bypass the currently selected
channel’s gate processor (A, B, C, or D). The signals
then pass merrily on their way into the compressor.
(This does not affect the Gain Reduction metering.)
Gate Key Filters
The gate’s detector circuit receives a copy of the
incoming signals, detects when gating should occur, and
applies the gating and all its parameters to the incom-
ing signals.
When the key lter ON button is engaged, the key
lter is placed before the detector, so you can adjust the
signals reaching the detector, and remove any signals
which may cause false triggering. (The low-pass and
high-pass lters are only applied to the signal going to
the detector and not to the main audio output.)
26. ON button
This button engages or disengages the key lter
circuit. This allows you to quickly compare the action of
the key lter on gating.
When this button is out, the key lter knobs will have
no effect on the gate.
27. HP FREQ knob
The gate key lter high-pass lter employs a 12 dB
per octave Linkwitz-Riley design. This knob allows you
to adjust the key lter’s cutoff frequency from 20 Hz to
5 kHz.
Any frequencies lower than the setting will be attenu-
ated, and play less part in the gating and noise reduc-
tion. Press this knob for 2 seconds to listen to the key
lter and select the best setting of this control.
28. LP FREQ knob
The gate key lter low-pass lter employs a 12 dB per
octave Linkwitz-Riley design. This knob allows you to
adjust the key lter’s cutoff frequency from 1 kHz to 20
kHz.
Any frequencies higher than the setting will be at-
tenuated, and play less part in the gating and noise
reduction. Press this knob for 2 seconds to listen to the
key lter and select the best setting of this control.
Gate Key Filter listen
Pressing and holding either key lter knob for 2
seconds will illuminate the bottom amber LED of the
knob, and place the channel in key lter listen mode.
The channel will output only the key ltered signal and
allow you to quickly identify target frequencies by ear.
For an example of how to use key lter, suppose you
have the Quad Comp/Gate connected using channel in-
serts (as in gure 1 on page 6). It receives the individu-
al channel signals and sends them back to your mixer:
1. On your mixer, remove the channel from the
main mix.
2. Solo that channel to the headphones.
3. Engage the key listen by pressing and hold-
ing either of the key lter knobs on the Quad
Comp/Gate.
4. Use the HPF and LPF controls to remove un-
wanted frequencies false-triggering the gate.
5. Make appropriate gate parameter adjustments.
6. Disengage the key listen.
7. Bring the signal back into the mix.
INPUT
OUTPUT
LEVEL DETECTOR
AND CONTROLS
KEY FILTER
HPF LPF