Orban OPTIMOD-FM 8700, Operating Manual

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OPERATION ORBAN MODEL 8700i
Each Factory Preset has a L
ESS
-M
ORE
control that adjusts on-air loudness by altering
the amount of processing. L
ESS
-M
ORE
simultaneously adjusts all of the processing
controls to optimize the trade-offs between unwanted side effects.
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 defeat-
ed 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 there-
fore 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 gat-
ed. (It gates whenever the input level to the structure is below the threshold of gat-
ing.)
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
AGC Controls
Intermediate Names Advanced Names Range
AGC On/off AGC Off / On
Drive Drive
–10 ... 25 dB
Release Release
0.5, 1.0, 1.5, 2 … 20 dB/S
Gate Thresh Gate Thresh Off,
–44 ... –15 dB
Bass Coupling 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 3-5: AGC Controls