Using
the
REAR ROLLOFF sets the frequency above which the rear channel sound is attenuated. It should be high enough to give presence and airiness to the rear sound, but not so high as to place distracting instrumental overtones or other sounds behind you. The appropriate setting will vary with program material.
REAR DELAY Since the rear channel in Music contains extracted ambient information, it typically does not need as much delay as the film surround modes. This delay can be adjusted between
DECORRELATE electronically "scrambles" the monaural surround chan- nel to provide added spaciousness and envelopment through the stereo outputs.
In Music, MAIN MUTE mutes the front outputs if the system is configured with side speakers, otherwise it is inactive; EFFECTS MUTE mutes the center, sides and rear outputs.
Full Range
EFFECT LEVEL controls the loudness of the center, side and rear outputs.
CENTER LEVEL attenuates the level of the center channel as much as 10dB. The proper setting for this control will vary depending on the recording and your taste. There is no "correct" setting.
HIGH PASS removes low frequencies from the center, side and rear outputs. This is particularly useful if you will be using the Full Range mode at high volume levels where the low frequencies might damage the smaller speakers.
SUB BASS BOOST boosts or cuts the subwoofer output level. Although the normal subwoofer level was set during the initial calibration procedure, with some recordings you may find it desireable to increase or decrease this deep bass level.
In Full Range, MAIN MUTE mutes the front outputs if the system is configured with side speakers, otherwise it is inactive; EFFECTS MUTE mutes the center, sides (if configured) and the rear outputs.
High Pass Filter
The high pass filter attenuates low fre- quencies at 9dB per octave. The values given are for the
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