Mackie Quad Gate, Руководство пользователя

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14
QUAD COMP/GATE
QUAD-C
OMP
/
GA
TE
15
Owner’s Manual
Owner’
s Manual
COMPRESSOR CONTROLS
Compressor Overview
The compressor is a standard compressor with vari-
able key filters, sidechain input, and an auto control.
It comes after the gate in the signal path of the Quad
Comp/Gate.
Signals that are above the threshold level are attenu-
ated by an amount set by the RATIO [30] control.
Once the COMP [17] button has been pressed, the
knobs operate as described below.
Note: The compressor is still in operation
(at its last settings) working its magic on
the audio, even if the COMP button is not
selected.
29. THRESHOLD knob
In compressor mode, this knob sets the input signal
level at which the compressor will engage. It ranges
from –60 dBu to +20 dBu.
30. RATIO knob
In compressor mode, this knob sets the rate of attenu-
ation applied to the signal as it exceeds the threshold.
The ratio can vary between 1:1 (no gain reduction),
through gentle compression, and up to the maximum of
infinity:1 (peak limiting).
You can think of the ratio as:
(input rise in dB) : (output rise in dB)
For example, if the ratio is set to 5:1, a 5 dB increase
in input level above the threshold will yield only a 1 dB
rise in output level; if the input rises 10 dB above, the
output only rises 2 dB.
31. SOFT KNEE button
This button engages the soft knee for the compressor.
As the signal approaches the threshold, gain reduc-
tion is gradually applied up to the full ratio setting. This
gives a gentler, kinder and smoother compression.
32. ATTACK knob
In compressor mode, this knob allows you to set how
quickly the compressor engages once the input signal
exceeds the threshold. The Attack time ranges from
1 ms to 300 ms. Faster settings have finer adjustment
increments.
33. AUTO button
This button engages the automatic attack and release
control for the compressor. The attack and release times
are automatically set, based upon the dynamics of the
program material.
34. RELEASE knob
If the input signals exceed the threshold, they will
be compressed. After this, when they drop below the
threshold, the compression will be released after the
amount of time set by this knob.
The time ranges from 50 ms to 3 seconds. Faster set-
tings have finer adjustment increments.
35. SIDE CHAIN button
When this button is engaged, any signals coming into
the rear panel SIDECHAIN RETURN [4] for the select-
ed channel can be used to trigger the compression for
that channel. This can be really useful.
Note: When this is engaged, the internal triggering of
compression is bypassed, so you must have something
coming into the SIDECHAIN RETURN, or there will be
no compression.
As an example of sidechainery, you could set up a
“ducker” which drops the level of a music program when
an announcement is made.
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