justed to optimum at the factory using precision test
instruments.
OUT . . . MUTING disconnected.
IN . . . between station noise suppressed on FM.
SPEAKER
When the speakers have been connected to the
proper push connectors on the back panel, the push-
buttons turn the speakers ON or OFF.
If the program is to be heard from the main speak-
ers only, the REMOTE pushbuttons are pushed IN.
This turns off the remote loudspeakers.
if the program is to be heard from the remote
speakers only the MAIN pushbutton is pushed IN.
This turns off the main speakers.
To hear program from both main and remote
speakers, both the MAIN and REMOTE pushbuttons
must be in the OUT position.
MAIN
PUSHBUTTON OUT . . . the program mate-
rial is heard from the MAIN speakers.
IN . . . the MAIN loudspeakers are turned
OFF.
REMOTE 1 or 2
PUSHBUTTON OUT . . . the program mate-
rial is heard from the REMOTE loudspeakers.
IN . . . the REMOTE loudspeakers are turned
OFF. (These pushbuttons do not affect the
headphone jack.)
Balancing your Stereo
The performance and enjoyment of a stereo sys-
tem is greatly increased when the sound is properly
balanced. The balance of the stereo system is af-
fected by many things including room acoustics,
furniture placement, room shape, small differences in
loudspeakers, etc. Factors that effect proper stereo
balance are correct phase for both channels and
equal program loudness.
TO ADJUST PHASE
1. Press the MODE pushbutton to the MONO posi-
tion.
2. Turn the BALANCE control to the 12 o'clock
position.
3. Stand about 10 feet in front of and midway be-
tween the loudspeakers. The sound should ap-
pear to come from directly in front of you. If the
sound is not directly in front of you, reverse the
leads on one of the loudspeakers only. When
the sound comes from the midpoint between the
speakers they are in PHASE.
TO BALANCE LOUDNESS
1. Press the MODE pushbutton to MONO.
2. Play a familiar recording.
3. Turn the BALANCE control to the 12 o'clock
position.
While the program is playing, stand between
the two loudspeakers. Listen for a difference in
loudness between speakers. If there is then a dif-
ference in loudness turn the BALANCE control
toward the speaker that is not as loud. Adjust the
BALANCE control until the sound is balanced be-
tween both speakers.
Listening to Your Stereo
LISTENING TO A STEREO RECORD
Turn the INPUT SELECTOR to PHONO 1 or
PHONO 2, whichever is connected to the record
player you wish to hear.
Make certain the MODE pushbutton is in the
STEREO position.
Adjust the VOLUME control to desired volume.
LISTENING TO A MONOPHONIC RECORD
Turn the INPUT SELECTOR to PHONO 1 or
PHONO 2, whichever is connected to the record
player you wish to hear.
Push the MODE pushbutton IN to MONO.
Adjust the VOLUME control to desired volume.
LISTENING TO A STEREO TAPE RECORDER
Turn the INPUT SELECTOR to TAPE 1 or TAPE
2, whichever is connected to the record player you
wish to hear.
Set the MODE pushbutton to STEREO or MONO,
depending on the program on the tape.
Adjust the VOLUME control to desired volume.
Two tape recorders can be used with the MAC
1900. Recording and monitoring can be done with
both tape recorders.
To monitor while recording your tape recorder
must have separate record and playback heads and
electronics for each. The TAPE MONitor pushbutton
lets you monitor the quality of tape recordings made
during the recording process. When the TAPE MON-
itor pushbutton is in the IN position it will play the
sound from the tape as it passes the playback head,
a moment after it is recorded. The recording process
11
Summary of Contents for MAC 1900
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