Lexicon DC-1 - REV 1 Owner's Manual page 29

Installation and
Calibration
DC-1 Digital Controller
Sides
This menu sets the system for your particular side speaker configuration.
Systems with side speakers should be designated as STANDARD or DI-
POLE. DIPOLE indicates a THX speaker configuration, and causes the unit
to mute the rear outputs when the THX effect is used. When STANDARD
or DIPOLE is highlighted, press SELECT to display and adjust the highpass
filter for the side outputs. Choices are: OFF, 80, 100 or 125Hz.
Selecting NONE mutes the side outputs and disables any effect parameters
related to side speakers.
Rears
This menu allows the unit to be configured for the correct number of rear
speakers. ONE causes the rear outputs to be summed to mono and made
available only at the left rear output. TWO sends decorrelated or stereo
signals to the rear outputs. When TWO or ONE is highlighted, press
SELECT to display and adjust the high pass filter for the rear outputs.
Choices are: OFF, 80, 100 or 125Hz.
Selecting NONE mutes the rear outputs and disables any effect parameters
related to rear speakers.
Subwoofer Output
Use of the subwoofer output is specified here. Selecting YES, then pressing
SELECT allows you to display and adjust the crossover frequency for the
subwoofer output. The subwoofer output is created by summing the left,
right and center outputs, folllowed by a 24dB/octave lowpass filter. For the
tragically technical, this is a Linkwitz-Riley lowpass filter. Both the sum-
ming and the crossover are performed in the digital domain. You can select
three different crossover points (80, 100 or 125Hz) for the subwoofer.
Although you can also elect to bypass the crossover and run a full range
output if your subwoofer has an internal crossover, it is generally best to use
the crossover in the DC-1.
Subwoofer Frequency Response
NO mutes the subwoofer output and disables the Sub Bass Boost parameter.
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