Lexicon CP-3 Plus Owner's Manual page 51

Using
PLUS
the CP-3
Mono Logic
46
* 6 if configured with center speaker;
15 if configured without center speaker (Presets only)
The setting of EFFECT LEVEL is very important in Mono Logic. If this
control is set too high, the sound will be too reverberant; too low, a setting
will result in an insufficient amount of the effect. This control adjusts the
loudness of the side and rear outputs as well as the amount of ambient signal
mixed into the front speakers.
TREBLE ROLLOFF regulates the treble cut in the side and rear channels.
The optimal setting for this parameter will vary widely with the age, quality
and condition of the source material.
ACADEMY FILTER is provided to recreate the proper tonal balance of
older monaural films, which were recorded with a much narrower and
duller frequency response than current films.
MAIN LEVEL controls the level of the mono signal which is reproduced by
the main speakers. When there is a center speaker configured, many films
may sound better when this control is set between 6-12. This will spread the
film sound out around the screen and can be more pleasant than restricting
the dialog and much of the other film sound to the center speaker.
SUB BASS BOOST boosts or cuts the subwoofer output level. Although the
normal subwoofer level was set during the initial calibration procedure,
with some recordings you may find it desireable to increase or decrease this
deep bass level.
In Mono Logic, MAIN MUTE mutes the center output; EFFECTS MUTE
mutes the front, side and rear outputs.
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