Turn the MODE SELECTOR to:
1. L TO L & R: connects the "left" input to
both loudspeakers.
2. R TO L & R: connects the "right" input
to both loudspeakers.
3. STEREO REV: connects the "left" input
to the "right" loudspeaker and the "right"
input to the "left" loudspeaker.
4. STEREO: connects the "left" input to
the "left" loudspeaker and the "right" input
to the "right" loudspeaker.
5. MONO (L+R): adds the "left" input
and the "right" input and then connects the
L + R program to both amplifiers and loud-
speakers.
6. L + R TO L: connects both left and right
inputs to the "left" loudspeaker only.
7. L+ R TO R: connects both left and right
inputs to the "right" loudspeaker only.
VOLUME
Use the MA230 VOLUME control to regu-
late the volume level of both channels. Turn-
ing the VOLUME control clockwise increases
volume level.
BALANCE
Use the MA230 BALANCE control to bal-
ance unequal volume in the left and right
channels of a program source. The volume
of each speaker system relative to the other
can be varied, at the same time the combined
room volume level is not changed.
LEFT . . . turning the control to the left
accents the left channel by reducing the right
channel output.
RIGHT . . . turning the control to the right
accents the right channel by reducing the
left channel output.
BASS
Figure 5. BALANCE Control.
The BASS control is a dual-concentric
control. The two are friction coupled. The
center knob controls the left channel. The
outer ring controls the right channel. With the
BASS control it is possible to vary the bass
loudness relationship existing between the
left and right speakers. Both controls can be,
turned together as a single adjustment or one
may be held as the other is turned. Clockwise
rotation increases bass loudness; counter-
clockwise rotation decreases bass loudness.
TREBLE
The TREBLE control is dual-concentric
control. The two are friction-coupled. The
center knob controls the left channel. The
outer ring controls the right channel. With
this control it is possible to vary the treble
relationship existing between left and right
speakers. Both controls can be turned to-
gether as a single adjustment or one may be
held as the other is turned. Clockwise rota-
tion increases treble loudness; counterclock-
wise rotation decreases treble loudness.
Figure 6. BASS Control.
Figure 4. VOLUME Control.
6
Содержание MA 230 - SERVICS BULLETINS
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