There are specific Home THX Audio requirements for surround sound level calibration. This
information is included in the manual section "MclNTOSH HOME THEATER SURROUND
SOUND VOLUME LEVEL CALIBRATION".
SUBWOOFER
Home THX Audio specifications require a subwoofer to be used in a home theater system.
A subwoofer loudspeaker is designed to reproduce only the lowest audio frequencies, which
are essentially non-directional. The C39 meets this requirement by combining the Left, Right
and Center channel signals and feeding them through a filter that allows only the bass fre-
quencies of 80Hz and lower to be fed to the subwoofer outputs. The non-directional sound
characteristics of a subwoofer allow it to be placed in a wide range of room locations.
A well designed subwoofer will reproduce the low frequency music and sound effects pre-
sent in today's action movie sound tracks with dramatic impact. Using a discretely placed
subwoofer also allows the optional use of somewhat smaller and less obtrusive front
loudspeakers.
Detailed information on Home Theater loudspeaker setup is covered in the manual enclos-
ed with your Mcintosh HT Series Home Theater loudspeakers.
The C39 can be remotely controlled. Most of the operating functions performed at the front
panel, also can be done by the C39 Hand Held Remote Controller. The following information
refers only to the front panel. Another section of this manual explains the operation of the
C39 Hand Held Remote Controller.
The back cover of this manual folds out to show drawings of the front and rear panels of
the C39. This will assist you in identifying and locating the front panel controls, switches,
pushbuttons and the rear panel connectors and switches. The letters and numbers on the
drawings refer to the information that follows.
A. BASS and TREBLE
Provides 12dB boost and cut, with neutral flat response at the center detent position. The
Bass and Treble controls affect the LEFT and RIGHT Balanced Outputs, the LEFT FRONT,
CENTER, RIGHT FRONT and SUBWOOFer Unbalanced Outputs. These are all Area "A" Out-
puts. The corresponding channels of the 6 CHANNEL OUTPUT connector are also affected.
The VCR1, VCR2, TAPE 1, TAPE 2 and Area "B" Outputs are not affected by the Bass and
Treble controls.
B. RECORD
Selects any of the 12 audio input program signals that will feed the TAPE 1, TAPE 2, VCR
1, VCR 2 and Area "B " Audio Outputs.
Area "B" must first be turned ON in Area "B", by a keypad or remote controller
transmitting to an Area "B" sensor, before the Area "B" outputs will operate.
The audio signals for SATellite, TV, Laser Video, VCR1, VCR2 and V-AUX will have their cor-
responding video signals switched simultaneously. The selected video RECORD signals will
appear at the MONitor B, VCR1 and VCR2 VIDEO Outputs. This allows the selected program
signals to be fed to an external TV monitor, as well as to one or two VCR units for recording
purposes.
8
HOME THEATER
AUDIO CHANNEL
CONFIGURATION
WITH DOLBY
PRO LOGIC™
AND HOME
THX AUDIO
FRONT PANEL
CONTROLS,
SWITCHES
AND
PUSHBUTTONS
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