McIntosh MA 5100, Owner'S Manual

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CONNECTING THE TAPE PLAYER: (A tape transport without electronics.)
Plug the cable from the "left" tape head output on the tape transport
into the upper TAPE HD jack on the MA 5100.
Plug the cable from the "right" tape head output on the tape transport
into the lower TAPE HD jack on the MA 5100.
AC OUTLETS:
There are 3 black AC outlets and one red AC outlet. The power to the
black AC outlets is controlled by the front panel switch. Use these
outlets for a tuner, tape recorder, etc.
The red outlet is on at all times. Use the red outlet for a turntable or
record changer.
The turntable is protected by this arrangement. It is necessary to turn
off the turntable or record changer with its own AC switch.
GROUND CONNECTION:
A single ground post is provided. Grounds from turntables, record
changers, tape decks, etc. should be connected to this post. Do not
duplicate this ground circuit. Hum is likely to be heard if a duplicate
ground return is used. The left and right program cables from each
source should be wound or twisted in with the cables. To avoid hum,
make sure the ground wire does not make any connections to the
shields of the left and right channel cables.
TO BALANCE LOUDNESS
1 Set the MODE SELECTOR to MONO.
2 Play a familiar recording.
3 Turn the BALANCE control to the 12 o'clock position.
4 While the program is playing, stand between the
two loudspeakers. Listen to see if there is a differ-
ence in loudness from either speaker. If there is a
difference, turn the control toward the speaker that
is not as loud. Do this until you find that point where
the sound is equally loud from both speakers.
BALANCING YOUR STEREO
The performance and enjoyment of a stereo system is
greatly increased when the system is properly balanced.
Three of the factors that effect proper stereo balance
are:
1 Balance of the entire system.
2 Proper phase in both channels.
3 Equal program loudness.
TO ADJUST PHASE
1 Set the MODE SELECTOR to MONO.
2 Stand about 10 feet in front of and midway between
the loudspeakers. The sound should appear to come
from directly in front of you. Have someone switch
the PHASE switch. If the sound is not directly in front
of you with the PHASE switch in the 0 NORMAL
position, reverse the leads on one loudspeaker. When
the sound comes from the mid-point between the
speakers they are in PHASE.
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