Fig. 11—Securing the mounting strip to the front panel.
Select the proper length 6-32 flathead screws and
use them to install the two mounting strips behind the
front panel. Be sure that the edge of the strip with the
clips is toward the panel opening. Line up the mounting
strips on each side of the front panel cutout so the three
holes in the strip are in line with the three holes in the
panel; see Fig. 11. Install the proper length flathead
screws in the center hole, and drive them in so the flat-
heads are flush with the panel; if necessary, countersink
the two center holes.
Insert the MR-65 carefully into the panel opening
from the front so that it rests on the shelf. Insert the
proper length 6-32 roundhead screws into the four holes
in the mounting flanges on each end of the tuner front
panel and drive them in, but do not tighten.
IF THE CABINET IS FIXED AND WILL NOT BE MOVED
ABOUT, IT IS NOT NECESSARY TO SECURE THE MR-65
CHASSIS TO THE SHELF.
If this is the case, tighten the four screws holding the
front panel. If the cabinet is to be moved about, it is
recommended that the MR-65 chassis be secured to the
shelf. The four 10-32 x ½" screws used in shipping are
supplied for use if the shelf is under
3
/
8
". Use the 10-32
x ¾" screws if the shelf is ½" or
5
/
8
" and the 10-32 x 1"
screws if the shelf is ¾" or
7
/
8
". Secure the chassis with
the proper length 10-32 machine screws, inserting them
from beneath the shelf. Do not tighten the 10-32 screws
until you have tightened the front panel screws. Use of
the wrong length 10-32 screws may cause electrical
shorting in the circuit.
Fig. 12—Detail of how the panel end caps are fitted to
the MR-65 panel.
Attach the two metal panel end caps (packed with
mounting hardware) on each end of the panel by sliding
onto the pins. (See Fig. 3). The end caps are held by
spring tension and can easily be removed if the chassis
is to be taken out of the cabinet.
MOUNTING IN THE L-66 CABINET
The Mclntosh L-66 cabinet is supplied with complete
instructions and all necessary hardware for installing the
MR-65 Stereo FM Tuner. The dimensions of the L-66 are
16
9
/
16
" wide by 6
11
/
16
" high (including mounting feet) by
13¾" deep, including the front panel and control knobs.
CONNECTING THE MR-65
MONOPHONIC PROGRAM CONNECTIONS
MONOPHONIC FM PROGRAM
Fig. 13—Monophonic output with volume control.
The shielded cable supplied with the MR-65 is used
to connect the MR-65 output jack marked MON-OUT to
a high level (tuner or aux.) input of a preamplifier or
directly to a power amplifier (see Fig. 13.) The program
at MON-OUT jacks is controlled by the front panel volume
control.
Fig. 14—Monophonic output without volume control.
If you do not wish to use the volume control on the
MR-65 then the cable is plugged in one or the other of the
jacks marked STEREO-OUT. (See Fig. 14). The program
then is taken from the MR-65 ahead of the volume control.
STEREOPHONIC PROGRAM CONNECTIONS
For stereophonic programs the MR-65 should be
connected to a preamplifier control center. The MR-65
volume control does not change the tuner output pro-
gram level at the STEREO OUT jacks.
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