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SERVICE
MANUAL
INTEGRATED
SERVO AMPLIFIER
SMSUI A-M99
A-M9
•Specifications
Power
output
Min.
RMS,
both channels
driven,
from 20
to
20,000
Hz
with
no more
than
0.07%
total
harmonic
distortion.
70
watts per
channel
into
8 ohms.
Load
impedance
8
ohms
Total
harmonic
distortion
less
than
0.07%
at
or
below
rated min.
RMS
power
output
Frequency response
(at
1
watt)
10
to
60,000 Hz/ +
0.5
dB,
—2
dB
RIAA
curve deviation
(PHONO,
30
Hz
to
20 kHz)
4-0.5 dB,
-0.5 dB
Input
sensitivity
and impedance
(1
kHz,
for rated
powe
output))
PHONO
2.5
mV/47
kilohms
(Max.
input
capability:
150
mV
at
1
kHz,
less
thar
0.5%
total
harmonic
distortion)
TUNER, TAPE PLAY
(1,
2),
AUX/DA
150 mV/47
kilohms
MIC
0.5
mV/10
kilohms
Output
level
(1
kHz)
TAPE REC
150
mV
into
47
kilohms
Signal to
noise
ratio (short-circuit,
A-network)
PHONO
72
dB
TUNER, TAPE PLAY
(1,
2),
AUX/DA
100
dB
Power
requirements
Power
voltage..
120/220/240
V
(50/60
Hz)
For U.S.A.
&
Canada 120
V
(60
Hz)
Power
consumption....
230
watts
280
VA
Rated
350
watts
Maximum
Dimensions
345
mm
(13-5/8")
W
1
1
1
mm
(4-3/8")
H
234
mm
(9-1/4")
D
Weight
5.4 kg
(11.9
lbs.)
net
6.2 kg
(13.7
lbs.)
packed
*
Design
and
specifications subject to
change withou
notice
for
improvements.
CAUTION
1
.
Parts
identified
by
the
A
symbol on
the
schematic
diagram and
the parts
list
are
critical
for safety.
Use
only
replacement
parts
that
have
critical
characteristics
recommended
by
the
manufacturer.
2.
Make
leakage-current
or
resistance
measurements
to
determine
that
exposed
parts are
acceptably
in-
sulated
from
the
supply
circuit
before returning the
appliance
to
the
customer.
SiutsuL.
SANSUI ELECTRIC
CO.,
LTD.
A2
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