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OPERATION ORBAN Model 8400
distortion. The following pages provide the information you need to adjust the 8400 con-
trols to suit your format, taste, and competitive situation.
When you start with one of our Factory Presets, there are three levels of subjective ad-
justment available to you to let you customize the Factory Preset to your requirements:
Basic Modify, Intermediate Modify, and Advanced Modify.
Basic Modify
Basic Modify allows you to control three important elements of 8400 processing: the ste-
reo enhancer, the equalizer, and the dynamics section (multiband compression, limiting,
and clipping). At this level, there is only one control for the dynamics section:
Less/More, which changes
several different subjective setup control settings simultane-
ously according to a table that we have created in the 8400’s permanent ROM (Read-
Only Memory). In this table are sets of subjective setup control settings that provide, in
our opinion, the most favorable trade-off between loudness, density, and audible distor-
tion for a given amount of dynamics processing. We believe that most 8400 users will
never need to go beyond the Basic level of control. The combinations of subjective setup
control settings produced by this control have been optimized by Orban’s audio process-
ing experts on the basis of years of experience designing audio processing, and upon
hundred of hours of listening tests.
As you increase the setting of the
Less/More control, the air sound will become louder,
but (as with any processor) processing artifacts will increase. Please note that the highest
Less/More setting is purposely designed to cause unpleasant distortion and processing
artifacts! This helps assure you that you have chosen the optimum setting of the
Less/More control, because turning the control up to this point will cause the sound qual-
ity to become obviously unacceptable.
You need not (in fact, cannot) create a sound entirely from scratch. All User Presets are
created by modifying Factory Presets, or by further modifying Factory Presets that have
been previously modified with a
Less/More adjustment. It is wise to set the Less/More
control to achieve a sound as close as possible to your desired sound before you make
further modifications at the Advanced Modify level. This is because the
Less/More con-
trol gets you close to an optimum trade-off between loudness and artifacts, so any
changes you make are likely to be smaller and to require resetting fewer controls.
In the 8400,
Less/More affects only the dynamics processing (compression, limiting, and
clipping). Unlike the 8200, the 8400 has equalization and stereo enhancement that are
decoupled from
Less/More. You can therefore change EQ or stereo enhancement and not
lose the ability to use
Less/More. When you create a user preset, the 8400 will automati-
cally save your EQ and stereo enhancement settings along with your
Less/More setting.
When you recall the user preset, you will still be able to edit your
Less/More setting if
you wish.
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