Orban OPTIMOD-FM 8600Si, Operating Manual

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OPERATION ORBAN MODEL 8600Si
The LF parametric can be used in the mid-bass region (100-300Hz) to add “warmth”
and “mellowness” to the sound when boosting. When cutting, it can remove a
“woody” or “boxy” sound. In our presets, we tend to use it very sparingly (in the
order of 1 dB boost) to add a bit of extra bass warmth.
One formula for producing a very “big” bass sound on the air is to use a peaking
boost at 100Hz in combination with a Bass Shelf boost at 6 dB/octave.
The equalizer, like the classic Orban analog parametrics such as the 622B, has con-
stant “Q” curves. This means that the cut curves are narrower than the boost curves.
The width (in octaves) is calibrated with reference to 10 dB boost. As you decrease
the amount of EQ gain (or start to cut), the width in octaves will decrease. However,
the “Q” will stay constant.
“Q” is a mathematical parameter that relates to how fast ringing damps out. (Tech-
nically, we are referring to the “Q” of the poles of the equalizer transfer function,
which does not change as you adjust the amount of boost or cut.)
The curves in the 8600Si’s equalizer were created by a so-called “minimax” (“mini-
Equalizer Controls
Group Basic Mod-
ify Name
PC Remote
Name Range
BASS FREQ Bass Frequency 80, 85, 90, 95, 100, 105, 110,
115, 120, 125, 130, 135, 140,
145, 150, 160, 170, 180, 190,
200, 210, 220, 230, 240, 250,
270, 290, 310, 330, 350, 380,
410, 440, 470, 500Hz
BASS GAIN Bass Gain 0 … 12 dB
Bass Shelf
BASS SLOPE Bass Slope 6,12,18 dB/Oct
LF FREQ Low Frequency 20 ... 500 Hz
LF GAIN Low Gain –10.0 … +10.0 dB
Low
LF WIDT Low Width 0.8 ... 4 octaves
MID FREQ Mid Frequency 250 ... 6000 Hz
MID GAIN Mid Gain –10.0 … +10.0 dB
Mid
MID WIDTH Mid Width 0.8 ... 4 octaves
HIGH FREQ High Frequency 1.0 … 15.0 kHz
HIGH GAIN High Gain –10.0 … +10.0 dB
High
HIGH WIDTH High Width 0.8 ... 4 octaves
Brilliance BRILLNCE Brilliance 0.0 … +6.0 dB
HF Enhancer HF ENH High Frequency
Enhancer 0 … 15
DJ Bass DJ BASS DJ Bass Boost Off, 1… +10 dB
30HZ HPF 30HZ HPF 30 Hz High Pass
Filter Off/On
Phase Rotate PH-ROTATE Phase Rotator Out/In
Table 3-2: Five-Band Equalization Controls