Orban OPTIMOD-FM 8700, Operating Manual

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OPTIMOD-FM DIGITAL OPERATION
3-31
Equalizer Controls
Table 3-2 on page 3-33 summarizes the equalization controls available for the Five-
Band structure.
These EQ controls are available in Basic Modify, Intermediate Modify and
Advanced Modify screens. However, some of the control names have ab-
breviated names in the Advanced Modify screen, as noted in the table.
Except for
B
RILLIANCE
and
DJ B
ASS
B
OOST
,
these equalization controls are common to
both the Two-Band and Five-Band structures.
The equalizer is located between the AGC and multiband compressor sec-
tions of both structures.
Any equalization that you set will be automatically stored in any User Preset that
you create and save. For example, you can use a User Preset to combine an unmodi-
fied Factory Programming Preset with your custom equalization. Of course, you can
also modify the Factory Preset (with
L
ESS
-M
ORE
, Intermediate Modify, or Advanced
Modify) before you create your User Preset.
In general, you should be conservative when equalizing modern, well-recorded pro-
gram material. Except for Bass Shelf Gain, most of the factory presets use less than 3
dB of equalization.
Bass Shelf Controls, the 5-band
structure’s low bass equalization
controls, are designed to add
punch and slam to rock and urban
music. They provide a parametric
shelving equalizer with control
over gain, hinge frequency, and
slope (in dB/octave).
Bass Shelf Hinge Frequency sets the frequency where shelving starts to
take effect.
Bass Gain sets the amount of bass boost (dB) at the top of the shelf.
Bass Slope sets the slope (dB/octave) of the transition between the top
and bottom of the shelf.
Because the Five-Band structure often increases the brightness of pro-
gram material, some bass boost is usually desirable to keep the sound
spectrally well balanced. Adjustment of bass equalization must be deter-
mined by individual taste and by the requirements of your format. Be
sure to listen on a wide variety of radios—it is possible to create severe
distortion on poor quality speakers by over-equalizing the bass. Be care-
ful!