Thx Cinema (Thx) - Lexicon DC-1 - REV 1 Owner's Manual

DC-1 Effects

THX Cinema (THX)

THX Cinema Parameters
46
This Effect, available only in DC-1's equipped with THX processing, pro-
vides Home THX Cinema surround decoding for any Dolby surround
encoded movies, music or television programs.
Parameter
AUTO AZIMUTH
SURROUND EFFECT
RE-EQUALIZER
SUB BASS BOOST
CUSTOM
AUTO AZIMUTH is short for auto azimuth error correction/automatic
input balance. Auto Azimuth should be set to ON for films, and OFF for
music. When ON, special patented algorithms continually monitor the
input signal and adjust both the relative level and time offset of the two
channels to keep the dialog properly centered and special effects properly
localized. This automatic feature is the reason the unit does not need an
input balance control for Dolby Surround decoding.
SURROUND EFFECT selects the type of surround decoding used by the
DC-1. STEREOPHONIC provides extraction of five channels of surround
information from a standard 4-2-4 matrix-encoded soundtrack (Dolby
Surround, Ultra*Stereo, etc.) The drama of this effect is dependent on the
source material and is most noticeable with strong stereo music soundtracks.
The DECORRELATED setting electronically scrambles the monaural sur-
round channel to provide added spaciousness and envelopment.
RE-EQUALIZER equalizes the left, center, and right channel outputs to
match the overall frequency balance of the original recording. Without this
re-equalization, many films and some television programs will sound too
bright.
SUB BASS BOOST boosts or cuts the subwoofer output level. Although the
normal subwoofer level is set during the calibration procedure, with some
recordings it may be desirable to increase or decrease this deep bass level.
Initial Value
ON
DECORR STEREO, DECORR
ON
+0dB
Lexicon
Range
ON/OFF
ON/OFF
-5 to +5dB