Lexicon Digital Controller DC-1 - Manual (Page 34)

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Lexicon
Installation and
Calibration
This menu sets the system for your particular side speaker configuration.
Systems with side speakers should be designated as STANDARD (LARGE
or SMALL) or DIPOLE (LARGE or SMALL). DIPOLE indicates a THX
speaker configuration, and causes the unit to mute the rear outputs when
either THX effect is used. When STANDARD SMALL or DIPOLE SMALL
is highlighted, press SELECT to display and adjust the highpass filter for the
side outputs. Choices are: OFF, 80, 100 or 120Hz.
Selecting NONE mutes the side outputs and disables any effect parameters
related to side speakers.
In the Dolby Digital version of the DC-1, the active selections are LARGE
and SMALL. Systems that utilize full-range rear speakers should select
LARGE to direct a full-range signal to them. SMALL should be selected
when filtering is desired. (Off, 80, 100 and 120Hz are available as settings for
the -3dB point).
Selecting NONE mutes the rear outputs and disables any effect parameters
related to rear speakers.
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 front,
left, center and right outputs, followed by a 24dB/octave lowpass filter. For
5.1 effects in the Dolby Digital version, the two surround channels and the
LFE channel are also summed. Both the summing and filtering are per-
formed in the digital domain. You can select three different crossover points
(80, 100 or 120Hz) 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.
NO mutes the subwoofer output and disables the Subwoofer Level param-
eter.
Subwoofer Frequency Response
Sides
Rears
Subwoofer Output