Orban OPTIMOD-FM 8600Si, Operating Manual

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OPTIMOD-FM DIGITAL OPERATION
3-37
If you wish, you may adjust the Advanced Modify parameters to your own taste. Al-
ways start with
L
ESS
-M
ORE to get as close to your desired sound as possible. Then
edit the Advanced Modify parameters using the Advanced Modify screen and save
those edits to a User Preset.
AGC On/Off control activates or defeats the AGC.
This control is usually used to defeat the AGC when you want to create a preset with
minimal processing (such as a
CLASSICAL
preset). The AGC is also ordinarily de-
feated if you are using an external AGC (like Orban’s 6300). However, in this case it is
better to defeat the AGC globally in the System Setup
screen.
AGC Drive control adjusts signal level going into the slow dual-band AGC and
therefore determines the amount of gain reduction in the AGC. This also adjusts the
“idle gain”—the amount of gain reduction in the AGC section when the structure is
gated. (It gates whenever the input level to the structure is below the threshold of
gating.)
The total amount of gain reduction in the Five-Band structure is the sum of the gain
reduction in the AGC and the gain reduction in the multiband compressor. The total
system gain reduction determines how much the loudness of quiet passages will be
increased (and, therefore, how consistent overall loudness will be). It is determined
by the setting of the
AGC D
RIVE control, by the level at which the console VU meter
or PPM is peaked, and by the setting of the
MB D
RIVE (compressor) control.
Master AGC Release control provides an adjustable range from 0.5 dB / second
AGC Controls
PC Remote Names Range
AGC Off / On
Drive –10 ... 25 dB
Release 0.5, 1.0, 1.5, 2 … 20 dB / S
Gate Thresh Off, –44 ... –15 dB
Bass Coupl Off, 12 … 0 dB
MaxDeltaGR 0 … 24 dB, Off
Window Size –25 … 0 dB
Window Rel 0.5 … 20 dB
AGC Matrix L / R, sum / dif
AGC Ratio
∞
1, 4:1, 3:1, 2:1
Bass Thresh –12.0 … 2.5 dB
Idle Gain dB –10 … +10 dB
AGC Bass Attack 1 … 10
AGC Master Attack 0.2 .. 6
AGC Bass Release 1 … 10 dB / sec
Master Delta Thresh –6 … +6 dB
Bass Delta Thresh –6 … +6 dB
AGC Crossover Allpass, LiNoDly, Linear
Table 3-4: AGC Controls