Lexicon SDP-40 manual Bass Enhance ON, OFF, Center MIX, Channels, Cntr DLY Samples

SDP-40

The MODE ADJUST Menu

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.

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