3-32
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
Содержание OPTIMOD-FM 8600Si
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