Operations - Sansui AU-70 Operating Instructions & Service Manual

OPERATIONS
RECORD PLAYING
1. Set the "SELECTOR" switch at " PHONO".
2. Set the "MODE" sw itch at " STEREO" or
"ST E REO- REV" (at R or L in case of mon-
aural operat ion).
3. Sw itch on th e player, pu t on a record and
ad just the number of revolutions as necessary
before placing the pickup on the record.
4. Bala nce the so unds from both speakers by
mea ns of the "BALANCE" knob while watching
the output level meters.
.5. Adjust the amount of sound by means of the
"VOLUME" knob. Other adjusting knobs and
switches can be used to get the most satis-
factor y repreduction.
When you play a monaural record on a stereo
reco rd player, follow the same procedure as
for stereo record s. This will give you better
results.
Catridges are either magnet ic or crystal. Both
can be used with the AU-70, but, if poss ible,
use a magnetic type for the highest fidelity.
If
you feel that right a nd left are reversed
when play ing a stereo reco rd, turn the "MODE"
switch to "STEREO-REV". To balance th e
sounds from both speakers, play a m ona ural
record in the same way as a ste reo record and
adju st the "BALANCE" sw itch in such a way
that yo u feel th at th e sou nd comes from a point
midway between the ri ght and left speakers.
In this case, yo u ca n count on the output level
meters for a rough determin a tion of the bala nce.
Also, make sure that the "BLEND" knob is
kept at the point wh ere it cannot be turn ed
clockwise any further.
When yo u supply power to the player from
the power-plug receptacle on the back of your
amplifier, do not forget th at the player is sw itch-
ed off when you switch off th e amp lifi er.
BROADCASTS
In th e case of A a nd B above:
1. Set the "SELECT OR " swi tch at "TUNER".
2. Set the "MODE" sw itch at "STEREO" or
"STEREO-REV" in the case of A and a t R
or L (according to the cha nnel selected) in the
case of B.
3. Tune in with the tuner.
4. Use other ad justing knobs and switches to
get th e most satisfactory performance.
In the case of C
1. Set the "SELECTOR" switch at "AUX"
2. Set the "MODE" switch at "STEREO" or
"STEREO-REV".
3. Tune in with the tuner.
4. Prepare the FM-MPX adaptor for stereophonic
reception.
5. Use other adjustin g knobs and switches to
get the m ost satisfactory performance.
When you use a tune r or FM-MPX receiver, read
the instru ctions for them carefully. There should
be no mistakes in co nnections and operation.
When yo u usc our T U -70, follow the instructions
for
A.
Wh en yo u use an FM-tuner (without
Multiplex) and MP·2, foll ow the instructions for C.
USE A MICROPHONE
You can use microphones with your AU-70
amplifier. Any high-impedance (50 kilo-ohm)
crystal, dynami c or velocity microphone is accept-
able.
1. Set th e "SELECTOR" switch at "MIC".
2. Set the "MODE" sw itch a t " STEREO"
(when you use only one microphone for stereo-
phonic effect)
at R (wh en you use only one microphone for
monaural reprod uction),
or at L + R (when you mix two different pro-
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gram sources from tw o microphones.)
3. During stereophonic operation, you ca n use
the "BLEND" knob for mixing purposes.
4. Other adjusting knobs and switches can be
used for the most satisfactor y re production.
Remember that your AU·70 accepts only high-
impedance microph ones. You cannot get the
best performa nce if yo u use too long micro-
phone cord, which causes \'ario us problems a nd
redu ces treble. ·
Your amplifier ha s sepa rate tone' co ntrols for
right and left speakers. You will find thi s
feature very useful wh en yo u use one micro-
phone for music and another for vo ice. Further -
more, it gives added \, ersa tilit y to yo ur amplifier,
particularly when you record on tape what is
picked up by microph ones.
RECORD AND PLAY TAPES
Your AU·70 can be sed with a tape r ecord er
for recording and pl ayback and can also play
tapes on the tape deck. If yo u use a three·head
tape recorder which has separate record and
playback heads, you can make r ecordings while
listen ing to a reproducti on of the recordings. In
oth er words, your amplifier can be used as a
monitor which lets you know the quality of your
r ecord ings while th ey are being made ..
RECORDING
Set the' "SELECTOR" sw itch at the proper
position according to th e program source (broad-
castor record) you are going to record.
2. Set "MODE" switch at "STEREO" (for
stereophonic recording), at R or L (for monaural
recording), or at L+ R (for monaural recording
of a stereophonic source).
3. Prepare the tape recorder for recording.
4. Operate the recorder and amplifier adjusting
knobs and switches properly.
Amplifier adjusting knobs do not affect the level
and tonal quality of recordings, but only control
those ot th e sound from the speakers. Wh en you
record ' a broadcast cir record , you can obtain
better results by connecting the tape . recorder
directly to your amplifier instead of picking up
the sound fr om th e speakers with microphones.
PLAYBACK
1. a) T ape deck
Set the "SELECTOR" sw itch at "TAPE".
b) Tape record er
Set th e " TAPE MONITOR" switch at "ON".
2. Set the tape recorder in the play position.
3. Other ad justin g knobs a nd switches can be
used for th e most satisfactory reproduction.
CAUTION
Whe n you use a Tape Recorder, keeping the
"TAPE MONITOR"sw itch at "ON" the "MODE"
sw itch is not operative.
If
yo u want to use the "MODE" sw itch, connect
the recorder output to the "AUX" pin-jackson
the back of you r amplifi er and th e " TAPE MONI-
TOR" sw itch a t off.
TAPE MONITORING
To use yo ur amplifi er as a monitor for a three-
head tape recorder, follow the same proced ure as
the one for playing tapes on a recorder. Vvh en
you use a record er, read the instruction manual
carefull y to avoid errors in connection and oper-
ation.
U nl ess yo u use yo ur amplifier as a tape mon itor
or for playing a tape with a tape recorder, be sure
to switch off th e " TAPE MONITOR" switch.
Connecting a tape recorder can be done by
using either a single- connection connector or by
pin-jacks. The single-connection plug conforms
with German DIN standard specifications. It
makes it easier to connect the tape recorder
to your amplifier because it has a five-pin plug
for both record and playback. When you use
your amplifier as a tape moritor, turn on the
"TAPE MONITOR" switch if you want to hear
the sound you are recording.
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