Lexicon CP-1 PLUS V2.0 Owner's Manual page 35

The Modes:
Music Surround
Stereo Logic
Parameter
FRONT EFFECT
FILM EQ
REAR EFFECT
REAR ROLLOFF
BASS SPLIT
AUTO AZIMUTH/BAL
REAR DELAY
REAR NOISE CHIP
SIDE SPEAKERS
SET PROGRAM NAME
MEMORIZE PROGRAM
Front Effect/
Rear Effect
Rear Rolloff
Page 30
The essence of the Dolby PRO LOGIC circuit is that dialog, music and sound
effects are dynamically directed to the output channels, a process called
steering. The FRONT EFFECT and REAR EFFECT parameters in Stereo
Logic allow you to adjust the amount of this steering. Both are preset for
their maximum values in PRO LOGIC. In STEREO LOGIC, FRONT
EFFECT has a default value of 8, which is equivalent to 6 dB of steering; at
this level, central (monaural) sources are reduced in level by 6 dB in the main
stereo speakers. With FRONT and REAR EFFECT both set to 0, STEREO
LOGIC becomes the equivalent of a simple non-steered Dolby Surround
decoder. If you have no rear speakers, REAR EFFECT should be set to 0. The
CP-1 will set this parameter automatically when you specify a speaker
configuration with no rear channels. (See page 15.)
Film EQ
FILM EQ equalizes the left, center and right channel outputs to match the
overall frequency balance of the original recording. Without this equaliza-
tion, many films, and some television programs, will sound too bright and
become fatiguing to listen to.
REAR ROLLOFF controls the treble attenuation and should be adjusted on
music for maximum airiness and spatial realism without causing specific
instruments to seem to come from behind you. Stereo Logic's REAR
ROLLOFF parameter contains an AUTOMATIC mode. In this mode the
Initial Value
8
OFF
8*
14.1 kHz
77 Hz
OFF
8 ms
OFF
ON
NA
NA
* 0 if no rear speakers are configured
(dB)
+15.0
+10.0
+05.0
+00.0
-05.0
-10.0
-15.0
500 1k 2k
(Hz)
Lexicon
Range
0-16
Off, On
0-16
329 Hz-14.1 kHz, Auto
Bypass, 10-170 Hz
Off, On
0-32 ms
Off, On
Off, On
NA
NA
5k 10k 20k