INSTRUCTION MANUAL
McINTOSH MODEL C-4 and C-4P
AUDIO COMPENSATORS
The McIntosh Audio Compensator is a complete control unit for profes-
sional or home entertainment systems. The Model C-4 derives its power from
any McIntosh power amplifier; the Model C-4P is self-powered.
Five input channels are provided, three of which produce constant ampli-
fication over the audio spectrum of 20-20, 000 cycles, one which is compensated
for magnetic phonograph cartridges and one which is compensated for either
magnetic or constant amplitude cartridges. Each input is equipped with a level
control. A three output system is employed, two main outputs where all con-
trols are effective and one tape output where only the channel selector and com-
pensation selector are effective.
THE AUDIO COMPENSATOR IS A COMPLETE PRE-AMPLIFIER AND
RECORD COMPENSATOR: THEREFORE, THE USE OF AN AUXILIARY
EQUALIZER OR PRE-AMPLIFIER WITH THIS UNIT IS NOT RECOMMENDED.
INSTALLATION OF MODEL C-4 and C-4P
AUDIO COMPENSATORS
The C-4 and C-4P Audio Compensator may be mounted in any type equip-
ment cabinet, relay rack panel, door, wall, etc., or in its own cabinet for
chair side operation. It is not necessary to disassemble the Audio Compensator
for mounting. Using the mounting templates provided with this manual, cut a
rectangular hole in the panel to be used for mounting, insert the Audio Compen-
sator and secure with wood or machine screws.
When installing the C-4P, the power supply section should be mounted at
least two feet from the Audio Compensator.
After these units have been secured, proceed as follows:
1. Connect speaker to output of power amplifier.
2. Insert power amplifier line cord into one of the Auxiliary A.C. r e -
ceptacles provided at the rear chassis of the Audio Compensator.
3. C-4: Connect inter-unit cable to socket labeled "PRE-AMP INPUT"
on McIntosh Power Amplifiers. CAUTION: THE INTER-UNIT CABLE
MUST NOT BE REMOVED FROM THE C-4.
C-4P: Insert cable of D-8 power supply into socket labeled
"INTER-UNIT CABLE" on C-4P. Connect audio cable provided between
RETMA pin jack labeled "MAIN OUTPUT" on C-4P and 2.5V input of
power amplifier. (Socket labeled "PRE-AMP INPUT" on McIntosh
power amplifiers.)
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