BACK PANEL INFORMATION
TP 2
Test point TP 2 is provided for tuner circuit
alignment. It is also used in conjunction with
the Mclntosh Ml 2 or Ml 3.
OUTPUT ADJ
This dual concentric control adjusts the
output volume levels at the left-hand pair of
AUDIO OUTPUT JACKS. The center shaft
adjusts the LEFT channel output, and the
outer sleeve adjusts the RIGHT channel out-
put. These output control settings for the left
pair of j a c k s are not affected by the MR 71
front panel volume control.
MUTING ADJ
Adjust the operating threshold of the ultra-
sonic muting circuit.
AUDIO OUTPUT-LEFT-RIGHT
The left-hand pair of AUDIO OUTPUT j a c k s
provides audio signals unaffected by the
MR 71 front panel VOLUME control. The dual
concentric OUTPUT ADJUST controls set the
volume levels. Use these output jacks to con-
nect the tuner to a stereo control preampli-
fier which has its own master volume control.
The right hand pair of AUDIO OUTPUT
jacks provides audio signal controlled by the
MR 71 front panel VOLUME control. Use
these output jacks to connect to external
power amplifier, tape recorders, or any
equipment which requires continuous front
panel control of tuner output volume.
300 OHM-75 OHM ANTENNA
Terminal for connecting FM antennas to
the
MR 71.
1A SLO BLO FUSE
A 1 amp "Slo-Blo" fuse protects the tuner
circuits. This fuse does not protect additional
equipment connected to the back panel AC
outlet.
AC OUTLET
Provides 117 volt AC power up to 350 watts
maximum for additional equipment such as
turntables, or other tuners. This outlet is not
fused. It turns on and off with the front panel
MODE SELECTOR switch.
PANEL LIGHT SWITCH
Adjusts the panel lights to bright or dim.
INSTALLATION
The Mclntosh MR 71 tuner may be in-
stalled on a table, on a shelf, in a custom
built-in cabinet, or in a professional equip-
ment rack. For best appearance in an open
installation, mount the MR 71 in the attrac-
tive Mclntosh L11 cabinet. The L12 is oiled
walnut. The L11 is lacquered walnut.
The MR 71 tuner is installed by the new
exclusive Mclntosh PANLOC method. Refer
to the special PANLOC SYSTEM INSTALLA-
TION instructions included with your MR 71.
Allow at least 13¾ inches behind the mount-
ing panel for the MR 71 chassis. This in-
cludes clearance for leads and connectors.
Allow inside dimensions of at least 16½
inches in width and 6 inches in height for
adequate air circulation. The back of the
MR 71 cabinet should be as open as possible
for the best ventilation. Avoid mounting the
tuner directly over a power amplifier. The
heat from the amplifier may change the
precision tuner calibration. Adequate ventila-
tion will give your tuner long trouble-free life.
8
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