McIntosh MX113, Owner'S Manual

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How to Connect
CONNECTING A RECORD PLAYER TO PHONO 1
Connect the cable from the left channel of the record
player into the L PHONO 1 input jack.
Connect the cable from the right channel of the record
player into the R PHONO 1 input jack.
PHONO 2 is provided for the use of a second record
player.
Connect the cable from the left channel of the record
player into the L PHONO 2 input jack.
Connect the cable from the right channel of the record
player into the R PHONO 2 input jack.
AUX
Any high level program source such as another tuner or
a TV set can be connected to the input jacks marked AUX.
CONNECTING A TAPE RECORDER
To Record
Connect a cable from the L TAPE OUTPUT jack to the
left high level input of a tape recorder.
Connect a cable from the R TAPE OUTPUT jack to the
right high level input of the tape recorder.
To Playback/Monitor
Connect the cable from the left channel output of a tape
recorder to the high level inputs . . . L TAPE.
Connect the cable from the right channel output of a
tape recorder to the high level inputs. . . R TAPE.
CONNECTING THE MX 113 TO POWER A M P L I F I E R S
Connect the MAIN OUTPUT jacks to the input of a stereo
power amplifier. The L jack is connected to the left ampli-
fier input jack. The R jack is connected to the right ampli-
fier input jack.
The output source impedance at the MAIN OUTPUT is
200 ohms. Longer cables than supplied can be used be-
tween the MX 113 and the amplifier. The length of the
cable is limited by the capacity of the cable. The total
capacity must not exceed 1,000 pF. For instance: cables
with a capacity of 25 pF per foot may be 40 feet long.
13.5 pF per foot cable may be 75 feet long. The input
impedance of the amplifiers should be 47,000 ohms or
greater.
L + R OUTPUT
Use the L + R OUTPUT to feed left plus right signal to a
separate power amplifier for monophonic background
music or for a center channel speaker.
CONNECTING AN FM A N T E N N A
Satisfactory stereo where mono reception has been
satisfactory requires about ten times as much signal from
the antenna. Monophonic reception that is satisfactory
on an indoor antenna may require the use of an outdoor
antenna for stereo reception of equivalent quality.
With the MX 113 one of three antenna systems can be
used: (1) the indoor dipole supplied with the MX 113,
(2) an outdoor FM antenna, or (3) an all channel (UHF-VHF-
FM) antenna. In fringe areas best results will probably be
obtained with the use of an outdoor FM antenna. In many
areas the indoor dipole may be satisfactory.
CONNECTING AN INDOOR DIPOLE ANTENNA
The flexible folded dipole antenna (300 ohm) supplied
with the MX 113 is for indoor use in urban or high strength
signal areas.
Connect the two leads from the dipole to the terminals
marked FM ANT (red). The flexibility of the thin flat wire
assembly permits it to be placed under a rug, tacked behind
the stereo . . . or, placed in any other convenient location.
In some cases, it may be necessary to "position" the an-
tenna for best signal reception. This should be done before
it is permanently located or tacked down. Keep the antenna
away from metal objects. Do not attach to a metal surface.
CONNECTING AN OUTDOOR FM ANTENNA
An outdoor antenna is recommended for optimum per-
formance in all areas. In fringe (outlying) areas, best results
will be obtained with a highly directional FM antenna used
in conjunction with a rotator. Rotate the antenna until the
best reception is obtained. Connect the 300 ohm antenna to
the terminals marked FM ANT (red).
CONNECTING A 75 OHM COAXIAL ANTENNA
An unbalanced 75 ohm antenna can be connected to the
MX 113 with coaxial cable. Connect the center conductor
to the right FM ANT (red) connector. The shield is connected
to the GND (black) connector.
CONNECTING AN AM ANTENNA
A high-quality loopstick antenna is provided. It can be
rotated through nearly 180° in all directions for maximum
performance, optimum signal reception or minimum inter-
ference. With this mobility you will not suffer loss of sen-
sitivity regardless of the angle at which the instrument is
mounted. A back panel antenna jack is provided for con-
necting an external antenna if desired.
AC POWER OUTLETS
There are two black AC power outlets, and one red AC
power outlet. The AC power to the black outlets is controlled
by the front panel switch. Use these outlets for a power am-
plifier, or tape recorder, etc. The red receptable is on at all
times. Use the red outlet for a turntable or record changer.
The turntable is protected by this arrangement. It is neces-
sary to turn off the turntable or record changer with its
own AC power switch.
GROUND CONNECTION
A single ground post is provided. Grounds for turntables,
record changers, tape decks, etc. should be connected to
this post. The left and right program cables and the ground
wire from that source should be loosely twisted together.
To avoid hum, make sure the ground wire does not make
any contact to the shields of the left and right program
cables between the program source and the MX 113.
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