Lexicon DC-1 Digital Controller Lexicon Part #070-13234 - Manual (Page 55)

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Lexicon
AC-3 Effects and Parameters
AC-3 STATUS displays the current status of incoming AC-3 data. The
displayed items are not user adjustable.
BASS ENHANCE derives stereo bass to provide low frequencies that are
noticeably less localizable and more spacious in the playback room.
Note that results will vary depending on room acoustics and the low
frequency capacity of the surround speakers. As side and/or rear speakers
are used for bass enhancement, the effectiveness is improved with speakers
capable of reproducing reproducing low frequencies (LARGE). Using
speakers that are not capable of producing low frequencies (<80Hz) may
cause damage to them.
CENTER DLY SAMPLES adjusts the time offset of the center channel. The
appropriate value is +0 unless you know that the center channel is not
properly timed, as well as the amount by which it is off.
CENTER MIX adjusts the level of the center channel applied to the two-
channel downmix. The appropriate value for film is 16. The appropriate
value for music is 11.
AC-3 Effect
Parameters
Parameter Initial Value Range
AC-3 STATUS (display only — not user adjustable)
SURROUND EX (V4 only)
ON ON, OFF
COMPRESSION OFF AUTO, ON, OFF
RE-EQUALIZER ON ON, OFF
LFE MIX LEVEL +0.0dB -10.0dB to 0.0dB
SUBWOOFER LVL +00dB OFF, -30dB to +05dB
CUSTOM
This effect provides THX 5.1 Cinema enhancements for film soundtracks
recorded in the Dolby Digital format. This processing compensates for the
acoustical differences between large mixing theaters and the typically
smaller home environment. In this effect the side and rear speakers are
driven in parallel when you designate side speakers as STANDARD
(LARGE or SMALL) in the Speaker Configuration menu.
In software Version 4, when SIDE and REAR speakers are selected in the
SPEAKER CONFIGURATION menu, SURROUND EX is automatically set
to ON for proper decoding of SURROUND EX soundtracks.
THX 5.1