Lexicon DC-1 - ADDENDUM Owner's Manual Addendum page 30

DC-1Effects
DC-1 Digital Controller
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.
SOUNDSTAGE controls the level of the surround speakers relative to the
front speakers in a dynamic way. The DC-1 attempts to detect whether or
not the sound source was originally encoded from a surround source by
looking for occasional bursts of rear-steered material, and by identifying the
directional orientation of the background sound between strong sounds.
Whenever there is an indication that the source was originally surround
encoded, the Soundstage control automattically reverts to the REAR setting
— which gives the rear speakers full level. The NEUTRAL position attenu-
ates the rear speakers 3dB. The FRONT position attenuates the rear speakers
6dB. The effect is to move the listening position forward in the listening
space.
SURROUND ROLLOFF allows the high frequencies of the rear channels to
be attenuated with the same detection circuitry as that described for the
Soundstage control. The attenuation is quite attractive on many music and
broadcast sources which were not mixed for surround. When a surround
source is detected, these filters are removed, so the rear speakers can
reproduce surround events with full bandwidth. 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 outputs.
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. Raising the level will
provide a more enveloping surround field.
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 all channels except for the center
and subwoofer.
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