Lexicon DC-1 User Manual download pdf (Page 47)

DC-1 Digital Controller

DC-1Effects

Music Surround

(THX and Dolby

Digital versions)

Music Surround, available in the THX and Dolby Digital versions of the

DC-1, is a surround effect developed specifically for music listening. It

makes full use of additional loudspeakers placed at the center, sides and

rear of the room. This effect passes unprocessed left and right information

directly to the front left and right speakers.

Music Surround Parameters

CENTER LEVEL attenuates the level of the center channel and can turn it

off completely.

SURROUND LEVEL controls the volume level of the side and rear speakers.

Although we have selected a default value, the correct setting will vary with

each recording, the room, and your personal taste.

SIDE ROLLOFF provides a high frequency cutoff for the side speakers. The

optimal setting for this control will vary widely with the source material.

REAR DELAY OFFSET is an additional delay added to the rear channels.

This delay increases the apparent size of the listening space by increasing

the rear delay time. Feel free to experiment to find the setting that works

best.

REAR ROLLOFF sets the cutoff frequency of a low pass filter in the rear-

channel. Frequencies above this setting are attenuated. This control should

be set high enough to give presence and airiness to the rear sound without

placing distracting instrumental overtones or other sounds behind you. In

systems configured without rear speakers, the settings affect the side out-

puts.

SUBWOOFER LVL 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.

EFFECT LEVEL adjusts the loudness of the side and rear speakers. When

there are no side speakers, it adjusts the amount of ambient signal mixed

into the main loudspeakers.

Parameter Initial Value Range

CENTER LEVEL 15 0-30

SURROUND LEVEL +0dB -5 to +5dB

SIDE ROLLOFF 4.0kHz 453Hz20.0kHz

REAR DELAY OFFSET 5ms 0-20ms

REAR ROLLOFF 4.0kHz 453Hz20.0kHz

SUBWOOFER LVL +0dB -5 to +5dB

EFFECT LEVEL +00dB -30 to +05dB

CUSTOM

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Lexicon DC-1 User Manual Page 47