a tape recorder to the L TAPE MONitor input.
Connect the cable from the right channel output
of a tape recorder to the R TAPE MONitor input.
CONNECTING A STEREO TUNER
Connect the cable from the left channel tuner out-
put to the L TUNER input.
Connect the cable from the right channel tuner
output to the R TUNER input.
CONNECTING A RECORD PLAYER TO PHONO 1
Connect the cable from the left channel of the
record player into the L PHONO 1 input.
Connect the cable from the right channel of the
record player into the R PHONO 1.
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.
Connect the cable from the right channel of the
record player into the R PHONO 2 input.
CONNECTING A TAPE DECK FOR PLAYBACK
Connect the cable from the left tape recorder
head on the tape deck (one without its own elec-
tronics) to the L TAPE HEAD input. Connect the
cable from the right tape recorder head to the R
TAPE HEAD input.
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 wound or 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 be-
tween the program source and the MA 51000. The
only ground should be at the GROUND post on the
rear of the MA 5100.
AC POWER OUTLETS
There are 3 black AC power outlets and one red
outlet. The power to the black AC power outlets is
controlled by the front panel power switch. Use
these outlets for a tuner, tape recorder, etc. The
red receptacle is on at all times. Use the red outlet
for a turntable or record changer. The turntable or
record changer is protected by this arrangement.
It is necessary to turn off the turntable or record
changer with its own AC power switch.
What the Controls Do and How to Use Them
INPUT SELECTOR
AUX: Connects the output from any high level
program source requiring flat amplification to the
high level input stages. Such a source could be a
television set or other source that has output of
0.25 volts or more. In the AUX position the gain is
0 dB to the TAPE outputs. The input impedance
is 250,000 ohms.
TAPE: Connects the output from a complete tape
recorder to the high level input stages. In the
TAPE position the gain to the TAPE OUTPUTS is
0 dB. The input impedance is 250,000 ohms.
TUNER: Connects the output from any AM, FM or
FM STEREO tuner to the high level input stages.
In the TUNER position the gain to the TAPE out-
put is 0 dB. The input impedance is 250,000 ohms.
PHONE 1: Connects the output of any magnetic
phono cartridge to the low level input stages. The
response has been shaped to compensate for the
characteristics of magnetic phono cartridges. The
gain at 1000 Hz is 42 dB to the TAPE outputs. The
input impedance is 47,000 ohms.
PHONE 2: Same as PHONO 1.
Tape Hd: Connects the output of any tape head
(a tape deck without its own electronics) to the low
level input stages. The response has been shaped
to compensate for the characteristics of the tape
head. The gain at 500 Hz is 44 dB to the TAPE out-
puts. The input impedance is 500,000 ohms.
BASS
The BASS is a concentric control. The outer knob
controls the low frequency response in the right
channel. The center knob controls the low frequency
response in the left channel. The two knobs are fric-
tion coupled. This permits them to be adjusted
together or independently. Clockwise rotation in-
creases lows and counterclockwise decreases lows.
Turn control to the center position for flat response.
TREBLE
The TREBLE is a concentric control. The outer
knob controls the high frequency response in the
left channel. The center knob controls the high fre-
quency response in the right channel. The two knobs
are friction coupled. This permits them to be ad-
justed together or independently. Clockwise rotation
increases highs and counterclockwise decreases
highs. Turn the control to the center position for flat
response.
VOLUME
The VOLUME control regulates the loudness in
both channels. The VOLUME control has been pre-
5
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