is used to balance unequal program loud-
ness. Balancing program for equal loudness
is explained under ADJUSTING BALANCE
CONTROL TO CORRECT PROGRAM MA-
TERIAL.
The other factor that requires balancing
is system balance. The balance of the stereo
system is affected by many things including
room acoustics, furniture placement, room
shape, small differences in loudspeakers,
etc. Balancing the system is done by adjust-
ing the controls on the power amplifiers.
To begin balancing the system, check to
see that the controls on the amplifier are
properly set. If the amplifier is a Mclntosh
MC225, set the input switch to STEREO. Turn
both input level controls to the black dot at
the 12 o'clock position of the control.
If the amplifier is a Mclntosh MC240 or
MC275 check to see that the cables from the
MX110 are plugged into the STEREO INPUT
jacks. Then set the lever switch to STEREO.
Turn the BALANCE control to the 0 mark at
the 12 o'clock position of the control. The
amplifiers are now ready for the rest of the
steps to balancing the system.
1. Play a familiar recording on the record
player.
2. Push the two PANLOC buttons to re-
lease the MX110 from the mounting shelf.
Pull the MX110 toward you until the latch
locks engage. Turn all the INPUT LEVEL
ADJUST controls full on (clockwise).
3. Turn the INPUT SELECTOR to the
PHONO position into which the record player
is connected.
4. Turn the BASS controls and TREBLE
controls so that the knob indicator is cen-
tered between the panel markings L and R.
5. Turn the BALANCE control to the center
or 12 o'clock position.
6. Place the LOUD switch in the OUT
position.
7. Place the TAPE MONITOR switch in the
OUT position.
8. Place the PHASE switch in the 0°
position.
9. Place the LF rumble filter switch in the
OUT position.
10. Place the HF cutoff filter switch in the
OUT position.
11. Turn the MODE SELECTOR to the L+R
TO L position.
12. While the program is playing, alternate
the MODE SELECTOR between the L+R TO
R and the L+R TO L position. On amplifiers
such as the MC225, adjust the correct gain
control until the loudspeakers are of equal
loudness. On the MC240 or the MC275, turn
the balance control until the loudspeakers
are of equal loudness.
The stereo system is now balanced. It will
remain balanced through all modes of opera-
tion. Leave the MX110 extended on its
PANLOC stops for the next series of adjust-
ments.
ADJUSTING PHASE
1. Set the MODE SELECTOR to STEREO.
2. Turn the BASS controls and TREBLE
controls to straight up position so that the
dial indicator centers between the panel
markings • L and ° R.
Stand approximately 10 feet in front of
and midway between the loudspeakers. The
source of sound should appear to be directly
in front of you. Alternate the PHASE switch
between 0° and 180°. If the sound is not
directly in front of you in the 0° position,
reverse the leads to one loudspeaker. The
PHASE control is used to correct phase in the
source material whenever necessary.
BALANCING LOUDNESS BETWEEN
PROGRAM SOURCES
The MX110 has set level controls in the
AUXILIARY, PHONO 1 and PHONO 2 inputs.
These adjustments allow you to make any
program material connected to the auxiliary
and phono inputs the same loudness as the
tuner. To make this adjustment proceed as
follows:
1. Turn the MODE SELECTOR to MONO
(L+R).
2. Turn the INPUT SELECTOR to FM.
Adjust the VOLUME control to a comfortable
listening level.
3. While the record is playing, turn the
MODE SELECTOR to the L+R to L position.
14
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