Lexicon SDP-40 - Manual (Page 95)

5-21
The MODE ADJUST Menu
SDP-40
BASS ENHANCE (ON, OFF)
BASS ENHANCE creates stereo bass, which results in low-frequency
reproduction that is less localizable and more realistic in the
listening space. When set to ON, the unit processes the low
frequencies sent to the FRONT L/R, SIDE L/R, and REAR L/R outputs
to create stereo low frequencies. This also includes the
SUBWOOFER L/R outputs when the SUB L/R parameter on the
CUSTOM SETUP menu is set to STEREO.
The crossover setting of the CENTER parameter on the CUSTOM
SETUP menu is critical to the effectiveness of BASS ENHANCE . It is
recommended to set the CENTER parameter to 120Hz and the SUB
L/R parameter to STEREO (if utilizing two subwoofers) to maximize
the effectiveness of BASS ENHANCE. If SUB L/R is set to MONO, it
is recommended to use FRONT L/R, SIDE L/R, or REAR L/R speakers
that are capable of reproducing frequencies at 40Hz or lower. See
page 3-18 for more information about CUSTOM SETUP menu
parameters.
Note:
BASS ENHANCE results will vary depending on room
acoustics. Most listening spaces will have a 2-3dB
reduction in low frequency energy when BASS
ENHANCE is set to ON. Use the BASS control to
compensate for this reduction.
CENTER (OFF, -30 to +12dB)
CENTER adjusts the output level of the center channel.
CENTER MIX (-25 to +5dB)
CENTER MIX adjusts the relative level of the center channel that is
encoded into the front left and right channels. The recommended
settings are +0dB for film sources and -5dB for music sources.
CHANNELS (3/3.1, 3/2.1, 3/2, 3/1, 2/2, 2/1, 2/0, 1/0)
CHANNELS indicates the number of channels present in the input
type. On the DOLBY DIGITAL STATUS menu, the value of the
CHANNELS parameter will be 3/2.1, 3/2, 3/1, 2/2, 2/1, 2/0, or 1/0.
On the dts STATUS menu, the value of the CHANNELS parameter
will be 3/3.1 or 3/2.1. The first digit indicates the number of front
channels, the digit after the / represents the number of surround
channels, and the .1 indicates the presence of the LFE channel.
CNTR DLY SAMPLES (-127 to +127)
CNTR DLY SAMPLES (Center Delay Samples) adjusts the relative
time offset of the CENTER output that is encoded into the FRONT
L/R outputs. The recommended setting for the CNTR DLY SAMPLES
parameter is +0, unless the CENTER channel is not properly timed
and the value of the error is known.
COMPRESSION (AUTO, ON, OFF)
COMPRESSION increases dialog intelligibility at lower volume
levels. When set to AUTO, Dolby Digital input types are
automatically compressed based on volume level. When set to ON,
full compression is applied regardless of volume level. When set to
OFF, compression is not applied. This parameter should be set to
AUTO or ON for Dolby Digital sources that are listened to at lower
volume levels.