Orban Optimod-PC 1101, Operating Manual

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OPERATION ORBAN MODEL 1101
Midrange Parametric Equalizer is a parametric equalizer whose boost and cut
curves closely emulate those of an analog parametric equalizer with conventional
bell-shaped curves.
Mid Freq determines the center frequency of the equalization, in Hertz.
Range is 250-6000Hz.
Mid Gain determines the amount of peak boost or cut (in dB) over a
±
10
dB range.
Mid Width determines the bandwidth of the equalization, in octaves.
The range is 0.8-4.0 octaves. If you are unfamiliar with using a parametric
equalizer, one octave is a good starting point.
With Five-Band presets, the audible effect of the midrange equalizer is
closely associated with the amount of gain reduction in the midrange
bands. With small amounts of gain reduction, it boosts power in the
presence region. This can increase the loudness of such material substan-
tially. As you increase the gain reduction in the midrange bands (by turn-
ing the
M
ULTIBAND
D
RIVE
control up), the M
ID
G
AIN
control will have
progressively less audible effect. The compressor for the midrange bands
will tend to reduce the effect of the
M
ID
frequency boost (in an attempt
to keep the gain constant) to prevent excessive stridency in program ma-
terial that already has a great deal of presence power. Therefore, with
large amounts of gain reduction, the density of the presence region en-
ergy will be increased more than will the level of energy in that region.
Because the 3.7 kHz band compressor is partially coupled to the gain re-
duction in the 6.2 kHz band in most presets (as set by the
B4>5
C
OUPLING
control), tuning M
ID
F
REQ
to 2-4 kHz and turning up the M
ID
G
AIN
control will decrease energy in the 6.2 kHz band—you will be in-
creasing the gain reduction in both the 3.7 kHz and 6.2 kHz bands. You
may wish to compensate for this effect by turning up the
B
RILLIANCE
control.
With Two-Band presets, the midrange equalizer will behave much more
as you might expect because the two-band structure cannot automati-
cally re-equalize midrange energy. Instead, increasing midrange energy
will moderately increase the Master band’s gain reduction.
Use the mid frequency equalizer with caution. Excessive presence boost
tends to be audibly strident and fatiguing. Moreover, the sound quality,
although loud, can be very irritating. We suggest a maximum of 3 dB
boost, although 10 dB is achievable. In some of our factory music presets,
we use a 3 dB boost at 2.6 kHz to bring vocals more up-front.
High Frequency Parametric Equalizer is an equalizer whose boost and cut curves
closely emulate those of an analog parametric equalizer with conventional bell-
shaped curves.
High Freq determines the center frequency of the equalization, in Hertz.
The range is 1-15 kHz
High Gain determines the amount of peak boost or cut over a
±
10 dB
range.