Dynamics (D zone) 291
PRO Series Live Audio Systems
Owner’s Manual
Item Control Function
1 ON switch Enables the compressor in the signal path. When
switched off, compressor is bypassed. (Both the
comp and gate switches can be on at the same
time.)
2 listen LED To aid set up, the compressor has a side chain listen
that sends the side chain onto a solo bus. The listen
LED illuminates to warn you that soloed material is
from the side chain, and not the main channel. For
information on the side chain, see “Side chain” on
page 296.
3 threshold control
knob
Sets the signal level above which gain reduction
starts to be applied. Range is from -50dB to +25dB.
4 comp/gate up and
down select
buttons
Swaps dynamic section control from compressor to
gate, and the reverse.
5 make up gain
control knob
Compensates for the reduced loudness of a
compressed signal. Range is from 0dB to 24dB.
6 KNEE switch Controls how compressor starts to apply gain as the
signal goes through the threshold; see “Knee type”
on page 293. For a description of the options, see
Table below. For more information, see “Knee” on
page 342.
7 ratio/range/
[ratio] control
knob
Adjusts amount of compression applied to signals
above threshold. Range is from infinity (∞) to 1:1.
When set to maximum (1:1), sets compressor to
limiter mode.
8 attack control
knob
Adjusts time for compressor to respond after an over-
threshold signal. Range is from 0.2ms to 20ms
(milliseconds).
9 MODE switch Selects compressor mode. There are four
compressor types available: corrective, adaptive,
creative and vintage. See “PRO Series compressor
modes (dynamic)” on page 341 for details.
10 release control
knob
Adjusts time for compressor to recover after
programme material falls back below threshold.
Range is from 0.05s to 3.00s (seconds).
11 Gain reduction
meter
Mimics the gain reduction meter at the top of the
input channel’s fast strip (see “Input metering” on
page 282).
12 Graph See “Compressor graph” on page 292.
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