Back Panel Information
TP1 and TP2
Test point TP1 and TP2 is provided for tuner
circuit alignment. It is also used in conjunction
with the Mclntosh Maximum Performance Indi-
cator.
117V AC OUTLET
Provides 117 volt AC power up to 350 watts for
additional equipment such as amplifiers, or other
equipment. This outlet is not fused. It turns on and
off with the front panel AC power switch on the
VOLUME control.
AC POWER CORD
Connect the AC power cord to a 117 volt, 50 to
60 Hz power line receptacle. The power used by
the MR 73 is 20 watts.
FUSE
A 0.5 AMP fuse protects the tuner circuits. This
fuse does not protect additional equipment con-
nected to the back panel AC outlet.
AM ANT SWITCH
Adjust the MR 73 AM ANT switch to match the
particular type of AM antenna used. EXT. position
is for a conventional antenna, usually of the out-
door type, from 50 to 150 feet in length. LOOP
position is for the built-in Ferrite Loopstick.
ANTENNA CONNECTION STRIP
Provides easy push type connectors for an AM
antenna, a ground connection, and a 300 ohm FM
antenna.
FM ANTENNA —75 OHM
Provides a type F male connector for a 75 ohm
unbalanced FM antenna.
AUDIO OUTPUTS
The left-hand pair of AUDIO OUTPUT jacks pro-
vides audio signals unaffected by the MR 73 front
panel VOLUME control. Use these output jacks to
connect the tuner to a stereo control preamplifier
which has its own master volume control.
The right hand pair of AUDIO OUTPUT jacks
provides audio signal controlled by the MR 73
front panel VOLUME control. Use these output
jacks to connect to external power amplifier, tape
recorders, or any equipment which requires con-
tinuous front panel control of tuner output volume.
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