Orban OPTIMOD-PC 1100 Operating Manual page 152

3-44
OPERATION ORBAN MODEL 1100
bination of fast release and independent operation of the bands provides the
maximum loudness and density on small radios achievable by the Two-Band struc-
ture. However, such processing may fatigue listeners with high-quality receivers, and
requires you to activate the AGC to control the average drive level into the two-
band compressor, preventing uncontrolled build-up of program density. Instead of
operating the Two-Band structure like this, you should choose a Five-Band preset
instead.
Bass Clip ("Bass Clip Threshold"): See page 3-38.
2B Clip is a compression threshold control that equally affects the bass and master
bands. It sets the drive level look-ahead limiter.
2B High Frequency Limiting sets the threshold of the high frequency limiter in
the Two-Band structure. When this control is set lower, gain reduction does more
high frequency limiting. When this control is set higher, distortion-cancelled clipping
does more high frequency limiting. This control controls the tradeoff between loss
of high frequencies (due to high frequency limiting) and excessive distortion (due to
clipping).
FINAL LIMT ("Final Limit Drive"): See page 3-39.
2B Master Compression Threshold sets the level where gain reduction starts to
occur in the Master (above 200Hz) band of the Two-Band Compressor.
2B Bass Threshold determines the compression threshold of the bass band (below
200 Hz) in the Two-Band Compressor. It can be used to set the target spectral bal-
ance of the Two-Band Compressor.
As the Two-Band Compressor control is moved towards "100%," the 2B
B C
ASS PL
control affects the sound less and less.
B T
ASS HRESHOLD
2B Master Attack sets the attack time of the Two-Band Compressor master com-
pressor (above 200Hz).
2B Bass Attack sets the attack time of the Two-Band Compressor bass compressor
(below 200Hz).
2B Crossover sets the structure of the two-band crossover to Allpass or Linear. See
on page 3-37 for more detail about these modes.
AGC C
ROSSOVER
The Five-Band Structure
The Five-Band structure consists of a stereo enhancer, a slow gain-riding two-band
AGC, an equalization section, a five-band compressor, a dynamic single-ended noise