Lexicon Digital Controller DC-1 - Manual (Page 44)

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Lexicon
Installation and
Calibration
The Tilt parameter can be thought of as a straight line that pivots on a
fulcrum at 1kHz to correct the overall tonal balance of source material. The
range is -3.0dB to +3.0dB, referenced to the Treble level. This control,
adjustable in 0.2dB increments, is useful on many older recordings, or when
the desired tonal balance cannot be achieved using the Bass, Treble and
Loudness controls. The Tilt control does not alter the tonal balance of the
rear or side speakers. Tilt (Dolby Digital version)
Tilt Control Frequency Response
Loudness vs DC-1 Volume control
(front left)
Loudness A Loudness Contour parameter which boosts bass information, provides
more balanced reproduction at low volume listening conditions. Once you
have calibrated DC-1 output levels, you can assume a specific acoustic level
for a given volume setting and set the LOUDNESS parameter ON to provide
the ideal amount of boost for any given volume setting. This parameter does
not affect the sound in rear or side speakers.