OnAir 2500 Digital Mixing Console
Operation 5-13
Date printed: 18.07.08
SW V3.0
5.3.3.4 (Channel) Dynamics Page
Each channel has an internal dynamics processor consisting of a limiter,
a compressor, an expander, and a gate section. The dB readings automati-
cally consider the selected amount of headroom (i.e., 0 dB indication =
0 dB
FS
– selected headroom).
Graph The green graph represents the current, static parameters of the dynamics
processor.
LIM, COMP, EXP, GATE Touching one of these edit buttons selects one of the four sections (limiter,
compressor, expander, gate) of the dynamics processor for adjustment. The
corresponding parameter values appear in the fields above the rotary encoders
and can be adjusted.
DYN Level Selects the dynamics unit’s input level for adjustment in a 0...+24 dB range.
Limiter/Compressor Parameters:
Ratio (Compressor only). The compression ratio is displayed as a ratio and can be
adjusted in a range of 1:1 (no compression) through 20:1 (heavy compression)
with the rotary encoder below the field.
Threshold The limiter/compressor threshold is displayed in dB and can be adjusted in a
48 dB range with the rotary encoder below the field.
Attack Time The limiter/compressor attack time is displayed in ms (milli-seconds) and
can be adjusted in a range of 0.2…20 ms with the rotary encoder below the
field.
Release Time The limiter/compressor release time is displayed and can be adjusted in a
range of 10 ms...10 s with the rotary encoder below the field.
Expander/Gate Parameters:
Ratio (Expander only). The expansion ratio is displayed as a ratio and can be ad-
justed in a range of 1:1 (no expansion) through 20:1 (heavy expansion) with
the rotary encoder below the field.
Attenuation (Gate only). The gate attenuation is displayed in dB and can be set in a range
from Max. (i.e. mute) to 0 dB (zero attenuation) with the rotary encoder
below the field.
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