tional audio program sources. A pair of low level inputs is included for a moving magnet phono
cartridge. Six of the audio inputs are for the audio portion of an audio/video signal. Six match-
ing standard and S Video inputs are also included. The C39 will simultaneously switch the
six video and corresponding audio signals.
The C39 uses digital Logic integrated circuits to drive Electromagnetic Switches for all in-
put, output and operating functions. This is the most reliable and distortion free switching
available.
Separate Record and Listen circuits allow recording from one source while listening to
another with audio or audio/video signals. A continuously variable Active Loudness control
allows loudness compensation to be selected for any setting of the volume control. The
Loudness control circuit elements are removed from the circuit path when the control is in
the flat or fully counterclockwise position.
Bass and Treble tone controls provide 12dB of boost or cut. At the center "Flat Response"
or detent position of the tone controls, all tone control circuit elements are removed from the
signal path. Other features include a precision digital driven six channel volume control, front
panel digital volume level indicator and Balanced outputs for the Left and Right output signals.
Front panel Camcorder inputs and a headphone output are also provided. These connec-
tions are hidden behind a motor driven door which is opened and closed by a convenient
front panel Access pushbutton. The Mcintosh C39 "Classic Mcintosh" all glass front panel
has all control, switch and pushbutton nomenclature illuminated.
The Mcintosh Home THX Audio licensed C39 Audio/Video Control Center, MC7106 six chan-
nel power amplifier and a set of Mcintosh HT Series Home Theater loudspeakers will make
a perfect "Mcintosh Quality" Home Theater system. Your Mcintosh dealer can assist you
in setting up all the various components of your Mcintosh Home Theater to ensure you will
receive the best possible performance.
DOLBY SURROUND, PRO LOGIC and the Double-D Symbol are trademarks of Dolby Licensing Laboratory.
Home THX®Audio is a registered trademark of Lucasfilm Ltd.
The C39 can be placed upright on a table or shelf, standing on its own plastic feet. It can
also be installed in an optional Mcintosh L74 equipment cabinet. Follow the mounting instruc-
tions enclosed with the L74 cabinet.
The C39 can be custom installed in a piece of furniture or cabinet of your choice. The
required panel cutout and unit dimensions are shown on Page 31 of this manual.
Always provide adequate ventilation for your C39, even though it develops very little heat.
Cool operation insures the longest possible operating life for any electronic instrument. Do
not install your C39 directly above a heat generating component such as a high powered
amplifier. In a system stack, the power amplifier should always be at the top. If all the com-
ponents are installed in a single cabinet, a quiet running ventilation fan can be a definite asset
in maintaining all the system components at their coolest possible operating temperatures.
A custom cabinet installation should provide the following recommended minimum spac-
ing dimensions for cool operation. Allow at least 1 1/2 inches (3.8cm) above the unit so airflow
is not obstructed. Allow 17 1/2 inches (44.5cm) depth behind the mounting panel, which in-
cludes clearance for connectors. Allow 1-1/8 inches (2.9cm) in front of the mounting panel
for knob clearance.
6
INTRODUCTION
HOW TO
INSTALL
THE C39
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