Sansui AU-70 Operating Instructions & Service Manual
- Type
- Operating Instructions & Service Manual
This amplifier has a maximum output of 50 watts (25W-25W)
and features
an
amazingly low distortion factor of not more
than 0.15% at 20W. A high-quality amplifier with many exci-
ting features, it
is
delivered to you with Sansui's fullest confidence.
This booklet explains the steps necessary for operating and
caring for your new
the
. AU-70. Read
an
the instructions
carefully and retain for future use.
CONTENTS
FEATURES.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3,
4
SPECIFICATIONS .. ... ... .....
...
......
...
...
...
.....
...........
. 5
CHARACTERISTICS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
CONNECTIONS..........................................
..
........
7,
8,
9,
10
SWITCHES AND CONTROLS
........
.
.....
..........
....
.. .. ..
11,
12
OPERATIONS....
................
.. ..
....
.. ..
......................
13,
14
HI
NTS
ON USE
................
..
..............
..
..............
.. 15,
16
SERVICE NOTE
................
..........
......
......
............
17,
18
PAR
TS
LIST
......
......
..
.....
.
...
.
........................
....
.. 19,
20,
21
SCHEMATIC DIAGRAM
..........
........
... .
..........
.
......
.
22
PARTS
LAyOUT
...
..... .
...
... .
............
... ..
.....
..
.....
..... .
23
SUI
STEREO
CONTROL
AMPLIFIER
AU-70
FEATURES
7189A
P.P.
PRODUCES
40W
WITHOUT
PISTORTION
(
MAX
. 0.95%
AT
30
CPS
AND
·0.15%
AT
1,000
CPS
)
The
7189A
power
tubes
operate
in class
AB,P
.
P.
(fixed bias)
Jor
high-fidelity
reproduction.
Their
combined
.
maximum
output
is
limited
to
50 W .
The
amplifier
incorporates
a
multiplex
feedback
circuit
(total
negative
feedback: 26 dB) for
the
first
time
in
this
class of amplifiers in Jilpan.
This
makes
it
extremely
low
in
distortion
over
the whole
frequency
range.
Total
harmonic
dis-
tortion
at
1
kc
is
0.15%.
At
30 cps, a
very
low
frequency
at
which
it is
extremely
difficult · to
minimize
ha
r
monic
distortion,
the
distortion
is
limited to
not
more
than
0.
95%
.
This
is
quite
a
feat
for a
50-watt
amplifier.
Another
remarkable
feature
is
the
damping
factor of 18, a figure
which
is
lower
than
that
of
triode
power
tubes
' coupled
in P.P.
This
is
why
bass
sounds
come
out
with
su
ch
clarity
.
- 3
NFB
USED
IN
ALL
AMPLIFIER
CIRCUITS
,
FROM
PREAMP
TO
POWER
AMPLIFIER
The
low
distortion
of
the
power
amplifier
is
meaningless
if
the
preamplifier
generates
distor-
tions.
Your
AU-70
uses a
three
-
stage
amplifier
circuit
in
its
interm
ediate
or
cpntrol
amplifier-
unlike
conventional
one-stage
control
amplifiers-
and
has
all its circuits in a single
negative
-feed-
back
loop.
These
make
your
AU
-70 free from
noise
and
distortion.
SUPER-PRECISION
TRANSISTOR
PREAMP
-
LIFIER
ELIMINATES
HUM
AND
NOISE
The
exclusive
Sansui
four-transistor
preamplifier,
which
features a
transistor
circuit factor of
4-as
compared
with
conventional
5-1O-al1d
a transistor
noise factor of 2
dB-as
compared
with
conven
-
tional 5 dB, eliminates
hum
and
noise,
the
enemy
of
high
-fidelity
reproduction.
The
amplifier has
a
much
better
SIN
ratio
and
a
gain
three
times
larger
than
vacuum-tube
amplifiers.
EACH
CHANNEL
CAN
BE
OPERATED
IN-
DEPENDENTLY
EQUIPPED
WITH
TONE
DEFEAT
Each
channel
has
independent
tone
contro
ls for
bass
and
treble.
This
makes
fine
adjustment
possible.
Moreover,
each
channel
is
equ
ipped
with
tone
defeat
which
cancels
the
tone
control
circuits.
You
can
easily
obtain
a flat frequency
response
without
causing
any
undulation
in
response
or
redu
ced
gain
in bass
and
treble as in
the
case of
conventional
mechanical
control by
means
of a
tone
volume
knob.
Therefore,
you
can
get
an
accurate,
perfectly flat
response
from
your
AU-70
just
by flipping a switch.
BLEND
CIRCU
IT
PERMIT
CONTINUOUS
S
HIFT
FROM
MONAURAL
.
TO
STEREO
As
you
turn
the
"BLEND"
switch clockwise,
y
our
AU
-70
gradually
shifts from
monaural
to
stereop
honic
repr~duction.
This
feature
enables
you to
get
full
stereophonic
effect by compensa-
ting
program
sour
ces
which
give a, particularly
s
tron
g effect of
th
e conce
rt
ha
lL
EA
S
Y-
TO-
READ
THREE
-
RAN
GE
OUT
P
UT
L
EV
EL
METERS
Each
output
level
meter
can
be switched over to
any of
the
three
scales of 5, 10
and
25 watts.
The
meters not only give
direct
readings
of
both
ch
anne
ls,
but
also indicate
any
lack of
balance
between
the
right
and
left
outputs.
These
prove
very useful
in
balancing
the
outputs
.
THREE
-
DIMEN
S
IONAL
P
ERFORMANCE
POSSIBLE
WITH
CENTER
-
CHANNEL
OUTPUT
TERMINAL
Y~ur
AU
-70
ha
s
an
ou
tput
terminal
for the
center
-channel amplifier.
Connect
it to your
monaural
amplifier to produce a
three-dimensional
effect.
EQUIPPED
WITH
ADVANCED
,
HIGH-
PERFORMANCE
ACCESSORY
CIRCUITS
Your
AU -70
is
equipped
with
various
advan
ced
access
ory
circuits
such
as loudness control, low
an
d
high
filters,
tape
monitor,
tone
defeat, pre-
sence, blend, speaker switch and
headphone
jack.
- 4 -
SPECIFICATIONS
M
AIN
AMP
LI
FI
ER
:
MAXI
MUM
OUTPUT
:
25W-25
W (
SO
W to
tal)
HARMON
IC
DISTORTION:
Max. 0.15 %
at
20W for 1,
000
Hz
Max . 0.95 %
at
20W
for
30
Hz
INTERMODULAT
IO
N
D
IS
TORTION: Max. 0.
85
%
at
20W
, (50 Hz
+
5,50
0 Hz)
FREQUENCY RE
SP
ONSE: 10-
80
,000
Hz
at
±1
dB
OU
TPUT IMPEDAN
CE
: 8
and
16 ohms
G
AIN
AND
SENSITIVITY
:
R
S
T
PHONO: MAG 84 d B (
Ou
tput 2
0W
at
1.1 mV
in
put
)
x-
T
AL
54
dB
(Output 2
0W
at
36mV input)
TAPE: 86 dB (
Ou
tput
2
0W
a t 0.9mV
in
put)
MIC: 86 dB (
Ou
tp
ut 20W a t
0.9
mV
in
put)
AUX: (
TA
PE MON)
51
dB (Output 2
0W
a t
50
mV input)
TUNER:
51
dB (O
utput
20W
at
50
mV
in
put)
ESIDUAL
NO
I
SE
:
below
0.25
p.
W
IN
RATIO
52
dB
(
at
T
APE
terminal)
ONE
CONTRO
L:
T
ype
CR
50 Hz +
11
to
- 15 dB
10,
00
0 Hz + 12
to
- 13
dB
E
QUALIZER
:
Ty
pe NF
TAPE:
NART
B (50
p.
s)
PHONO:
RIAA
A
CCESSORY
CI
RCU
I
TS
:
PRESENCE
CO
NTROL: Turno
ver
a t
150
Hz
LOW FILTER: 5
0Hz
- 12.5 dB
HIGH FILTER: 10,
000
Hz -13.5
dB
LOUDNESS CONTROL
TONE DEFEAT
TAPE MONITOR
HEADPHONE JACK
TAPE RECORDER PLAYBACK CONNECTION (DIN)
TERMINAL
FOR CENT
ER
·
CHANNEL
AMPLIFIER
LEVEL MET
ER
(
FOR
OUTPUT
) Three ran
ges
of
5,
10
and
2
5W
BLEND CONTROL
VA
CUUM
TUBES
,
TRANSISTORS
AND
DIODES:
7
18
9A X 4, 6AN8 X 2, 12
AX
7 X 3,
OA
-
91
ge
rmanium
dio
de
X 2, 2
5B
-
381
tra
nsis
tor
X
4,
50
-1
B silicon diode
X 2 5W-
0503
silicon dio
de
x l
TOTAL
: 9 tu
bes
a nd 9 di
od
es
PO
WER
SUPPLY
: 117V AC,
50
and
60
Hz:
P
OWER
CONSUMPT
IO
N:
150VA
DI
MENSIONS
: W i
dt
h 15" /6
/'.
D
epth
12
19
/
32
/1.
Height 519/3/ ' .
W
EIGHT:
30 lbs
- 5 -
~
"I..
CHARACTERISTICS
TONE
CONTROL
CHARACTERITICS
FREQUENCYRESPONSECHARACTE~ST~S
1111 I 1
1111111
NF:
26
dB
LO
AD RESISTANC E :
16
0HMS
20
r-
M~X
M~X
6
-4
II)
~
~
10 2
w
:---....
a;-
0
'"
....
TONE
DEFEAT
~
z 0 w -2
0
......
en
,
"-
Z
.......
A
'"
..."...
~
- 6
~
-10
~
- 8
--
OU
TPUT : I W
-
~
'"
0::
-10
----
OU
TPUT :
20
W
-
20
MIN I
II
1111
-12
1 I I I 11
11
100 I K 10 K 10 100 I K
10K
lOO
K
HIGH
AND
LOW
FILTER
CHARACTERISTICS
HARMONIC
DISTORTION
I I I I I I I I I
10
I J
~Nt~t
t~fE~T
10
-HARMONIC I Ke
;;;-
e
___
DISTORTION 1
00%
'
LOAD
RESISTANCE :
16
0HMS -
0 -
1-
-z _ .-
10
Ke
~
r- 0
w
;::
~
-1
0
HIGH
FILTER
Q:
0 5
0
LOW
FILTER
...
"-
,
"\.
!!?
~
-20
\ c I
I)
Q:
I
:'J
-30 1 .,
--
-
,....
-
100
I K 10 K o I 5
10 15
20 2 5
I
NPUT
AND
OUTPUT
CHARACTERISTICS
INTER
MODULATION
DISTORTION
I I I I I I I I
10 5
.5
Ke
+50
%LOAD
RES
IS
TANCE
I6
0HMS
25
/'
e
INPUT : MAIN / z
NF
:
26
db
LOAD
Q
RESISTANCE :
16
0HMS
...
10
:5
5
...
-
!!?
II
~
c
...
::::>
1
"-
...
::::>
II 1 5
10
15
20
0
I
/
V
0.
3 I 2
- 6 -
CONNECTIONS
SPEAKER
STEREOPHONIC
REPROD
U
CTION
Connect
(+)
of
th
e rig
ht-hand
s
peaker
to
the
8-
or
16
-ohm
terminal
of
th
e
upp
er R
termin
als
on
the
ba
ck
of
the
amplifier.
Connect
(- ) of
the
rig
ht-hand
speake
r
to
(C) of
the
upp
er R
termin
als.
Connect
(+)
of
the
l
ef
t-
hand
speaker
to
the
8-
or
16-o
hm
termin
al
of
the
lower L
terminal
s
on
th
e
back
of
the
amplifier.
Connect
(-)
of
the
left-hand
spea
ker to (C) of
the
l
owe
r
L
terminal
s.
MONAURAL
REPRODUCTION
When
you
use
an
8-o
hm
sp
ea
ker
sys
tem
for mon-
a
ura
l
reproduction,
co
nn
ect
th
e
upper
and
low
er
16-ohm
speaker
termin
als of
your
amplifier
to
the
(+)
terminal
of
the
speaker.
Conn
ec
t
th
e
upp
er a
nd
lower (C) s
peaker
term
i-
~
0 , O'
0'
0'
'0'
0'
0
15
~;::..,/-~-~~
P,)\,]
1'-
=~~~
'L'~t::'
L'
.~c
.;.\
~
Q;
O~
Q)
0;
C'
Q;
C e
nals
of
your
amplifier to
the
(- )
termin
al of
the
speaker.
THREE·DIMENSIONAL
STEREO·
PHONIC
REPRODUCTION
Your
AU-70
is equipp
ed
w
ith
a t
er
min
al for a
ce
nter-ch
a
nn
el amplifi
er
so
that
it can
be
used
for
three-dimensional
reproduction.
To
do
this,
connect
th
e
input
terminal
of
a
monaural
amplifier
(Either
a main
or
co
mbination
amplifier
can
be used) to
th
e pin-jack
of
the
ce
nt
e
r-chann
el o
utput
termina
l
at
th
e left
of
the
spea
ker
terminal
b
oa
rd
with
a s
hielded
wire
Th
e ce
nt
er-c
hann
el
mix
es
the
right
a
nd
l
eft
so
und
s
to
produce
the
thre
e-dimensional effect.
Speakers
suitable
tor
the
AU-70
are
20
to
30-cm
coaxial s
peak
ers
and,
for
the
best
mu
sical re
pr
o-
- 7 -
duction,
two
or
three-wa
y
speake
r systems
which
use different
speakers
for
different
fre
qu
ency
ranges.
In
c
hoo
sing
th
e
cabi
net, t
ake
acco
unt
of
ton
al
quality
in ad
dition
to
design.
CAU
TION:
If
you find
th
at
th
e so
und
s
from
both
sp
ea
kers
do
not
mix
well,
but
l
ea
ve a
sort
of
vac
uum
midway
be
tw
een
th
e
spea
kers, you
ca
n conclude
th
at
th
e amplifier and
the
speake
rs
do
not
ma
tch
in
polarity
(phase).
In
such a case, reverse the
(+)
and
(-)
co
nn
ect
ions
of
e
ith
er
spea
ker.
Wh
en
you
use
two
pairs of
spea
kers for stereo-
phonic
re
prod
uction,
mak
e s
ur
e
th
at
the
spea
k
er
output
te
rmina
l
connections
do
not
cause
con
t
act
between
Rand
L a
nd
that
the
terminals
are
con
nected
prop
e
rly
.
If
th
e
connect
ions
are
faulty,
yo
ur
amp
lifier will
not
wo
rk
normally
and m
ay
also
go
o
ut
of
order.
i Pl
ayer
(magnetic)
P
layer
(c
rystal)
RECORD
PLAYER
1.
Connect
th
e o
utp
ut
te
rmi
na
ls to
th
e
"PHONO-
R"
and
"
PHONO-L
"
terminals
(
in
the
case
of
mon
a
ur
al
reprodu
ction, to
eithe
r
of
th
ese
terminals)
on
the
back
of
your
amplifier
with
sh
ield
ed
wires.
2.
Set
the
ca
rt
ri
dge
switch
on
th
e
back
of
your
amp
li
fier to
"MAG"
or
"X
-TAL
"
according
to
the
type
of yo
ur
ca
rtridge.
3.
Connect
the
power-
cord plug
of
the
player
to
the
power
plug r
eceptacle
on
the
back
of
yo
ur
am plifier.
MICROPHONE
Connect
th
e m
ic
r
ophone
to R
or
L of
the
"M
I
C"
te
rminals
on
the
back of yo
ur
amplifier.
When
you use
two
micr
ophones,
connect
olle to
Rand
the
other
to L.
, "
Microphone
8 -
CARTRID
GE
SWITCH
S
et
this
to MAG
or
X·
TAL
dep
end
.
ing on
your
pla
yer
car
tridge
(
ma
gne
tic
or crys
tal
)
,
'.
CONNECTIONS
TUNER
You
can
listen
to
broad
casts eas
il
y
by
c
onnecting
your
amplifier
to
a
tuner
and
MPX
adapt
or.
A)
STEREO
TUNER
Conn
ect
tun
er
output
to the
Rand
L "T
L:N
ER"
te
rmina
ls on the back
of
yo
ur
am
pi
i
fie
r.
8)
MONAURAL
TUNER
Co
nn
ect
tun
er
output
to either R
or
L of the
"T e
NER'
- te
rminal
s
on
the back of yo
ur
amplifier.
C)
FM
MONAURAL
TUNER
AND
FM-M
PX
ADAPTOR.
Con
nect
monaur
al
tu
n
er
outjJut
to
the input
te
rmin
al of the
F:\l-'\lPX
adapt
or a
nc!
connect
R
an
d L
of
t
he
adapt
or o
utput
te
rmin
als to R
AM
/
fM
/
MPX
TU
NER
(SANSUI
TU·70)
and
L, respecti\'ely, ot the "
AUX"
terminals on
th
e back of yo
ur
amplifie
r.
TAPE
RECORDER
1.
SINGLE
-
CONNECTION
TAPE
RECORDER
(
DIN
STANDARD
SPECIFICATION
):
Connect the "
in
,
ld
e-c
onn
ection connec
tor
to t
he
"TAPE-I\E
C ' receptacle on the back of
your
amplifie
r.
2.
PIN
-
JACK
TA
PE
RECORDER
a) Rec
or
d
in
g
Con
nect the
tap
e rel'
or
cie
r i
nput
ternlina
is
to R
and L (R
or
L in the l'ase of monaural opera-
ti
on) of the
"REC
" te
rmin
als on the back
of
yo
ur
ampli
fie
r \
\'i
th shiel
de
d wires,
b) Pl
aybac
k
e
CENTER
Ii
rI
Q
It
o
16"
eQ
C
•
"CHANOllT
Ii
~
~
G).
fM
TUN
ER
(B)
or
(C)
MPX
ADAPTOR
(C)
9 -
Conn~ct
the
tape
reco
rder
output
termin
al
(
"LINE"
) to
Rand
L (R
or
L in
the
case
of
monaural
operation
)
of
the
"TAPE
MON"
terminal
s
on
the
back
of
y
our
amplifier.
3. Playing tapes
on
the tape deck
Connect
the
tape
deck
output
terminals
to R
and
L
(R
or
L
in
the
case of
monaural
opera-
tion) of
the
"TAPE
HEAD
"
terminals
on
the
back
of
your
amplifier.
4. Monitoring with a three-head tape
re-
corder
a)
Single-connection
tape
recorder
Connect
the
single-c
onnection
"T
APE-
REC"
receptacle
on
the
amplifier.
b)
Pin
-jack
tape
recorder
Tape-deck
plug
to
the
back
of
your
-
10
-
Connect the tape reco
rder
input
te
rminals
to R
and
L (R
or
L in
the
case
of
monaural
opera-
tion
)
of
th
e "REC" te
rminals
on
the
-
back
of
your
amplifier. Also, c
onnect
the
tape
recorder
o
utput
terminal
"
LINE
" to
Rand
L
(R
or L
in
the
case of
monaural
operation
)
of
the
"
TAPE
MON
"
termin
als
on
the
back
of
your
amplifier.
•
CENTER"
..
Q •
o
I~
Bll
~
"CHANOllT
..
D
~
G).
SWITCHES
AND
CONTROLS
CD
POWER
INDICATOR
T his
lights
up
yvhen
power
is
being
sup-
plied.
It
remains
on
whi
le
the
amplifier
is
in
oper
ation.
@
HEADPHONE
JACK
When
you
want
to avoid
disturbing
others
or
when you use
the
ampl
ifier
as
a
monitor,
co
nnect
h
ead
phon
es to this jack. You
can
still
enjoy
s
tereophonic
reprodu
ction
through
the
h
ea
d
phone
s.
For
thi
s
pur-
pose, you can use a ny type of
headphones
or
earphones
if
its plug fits
into
the
jack.
But
use dynamic
headphones
designed
for
stereophonic
reproduction,
if
possible.
@
SPEAKER
(
SPEAKER
OFF)
When
you
use
headphones
with
the
head-
phone
jack,
set
this
switch
to
"OFF
" to
cut
off
sound
to
the
speakers
.
This
feature
enables
you
to
enjoy
stereophonic
repro-
duction
without
disturbing
others.
@
PRESENCE
If
the
Tone
Control
al
one
is used
for
bass
com
pensat
ion,
slightly
higher
frequencies
are
compensated
at
the
same
time.
To
avoid
this,
turn
this
switch
"ON"
_
This
sets
the
turnover
at
150 cps,
changing
speaker
damping
and
frequency
re
s
ponse
ch
ara
cteristics
to
compensate
bass.
As
a
resu
lt, all s
ounds
become
impressive
and
you
can
enJoy clear, m
ag
nifice
nt
bas
s.
@
POWER
This
switch
is used f
or
connecting
and
disconnecting
the
power
supply.
Push
the
.
button
for
poweL
Pu
sh it
again
to
shut
it
off_
The
switch
also
activates
and
de
-
activates
the
power
-
supp
ly
plug
recept
acles
on
the
back
of
the
amplifieL
CD
HE"O
PHON
®
POWER
®
@
@
ow
..
TER
-
11
®
OUTPUT
LEVEL
METERS
Th
e
right
and
left
meters
indic
ate
the
out:
put
l
eve
ls of
th
e
right
and
left sp
eake
rs,
re
spectively.
Since
output
is s
hown
se
par
ate
ly for
each
c
hannel
,
the
met
e
rs
provide
easy
balance
adjus
tment.
Besides,
you
ca
n
wat
ch c
hang
es
in
th
e o
utput
of each
channel
dur
i
ng
ope-
ration
.
Each
meter
can
be
set
to
any
of
th
e
thr
ee
range
s of 5, 10
and
25
watts
by
means of
th
e
output-
level
meter
s
witch
on
the
back of the amplifieL
Choose
th
e
a
ppropriat
e
range
according
to
th
e
output
YOU
want. \
'-h
en the
"MODE
"
sw
itch is set
io
R (or L), t he
meter
for L (or R)
does
not \york.
(J)
LOUDNESS
\\
-
hen
so
und
\'olume
is
at
a low level,
you
ieel
as
if
bass and
treble
are missing.
In
such a case,
turn
this
switch
"ON
" to
compensate
bass
and
treble.
Th
is will
mak
e you f
ee
l
as
if
you
were
present
at
an
ac
tual concert,
@
LOW
FILTER
(for eliminating
low-frequency
noise)
.
Turn
this
5w
it
ch
"ON
" to reduce
phono
"
motor
and
other
unplea
sa
nt
low-frequency
nOI
ses.
®
HIGH
FILTER
(for eliminat-
ing high-frequency
noise)
Turn
this sw
it
ch
"ON
" to red uce relatively
high-frequen
cy noise, such as
the
sc
ratch
from
rec
orel
s
made
of
poor
mat
erial
or
noise
du
e
to
fluoresce
nt
lamp
s in
th
e
case
of
th
e
tun
er.
@)
TONE
DEFEAT
Turn
this
sw
it
ch "
ON
" to
open
the
tone
co
ntrol
circuit
s_
Then
th
e fre
qu
en
cy
re-
s
pons
e c
ur\'
e of
the
amp
lifier wi
ll
be
co
me
perfectly flat.
,
1
®
TAPE
MONITOR
vVh
en
you
mak
e record
in
gs
with
a
thr
ee
-
he
ad
tape
record
er,
turn
this
sw
itch
"ON"
to use
th
e
am
pI
ifi
er
as
a
mon
itor.
Then
th
e s
ounds
rec
ord
ed on
th
e
tape
are re-
pro
duced while
yo
u
are
reco
rding.
Keep
th
is switch "
ON
"
when
you play
the
t
ape
on
the tap
e
.recorder.
Be s
ure
to k
eep
th
e
~\\"itch
"OFF"
othe
r-
wIse.
@
BALANCE
Th
is
knob
is used to adjust
the
balan
ce of
volume
be
tw
ee
n
the
right
and
left
spea
kers
for
the
best ste
reoph
on
ic
e
ff
ect.
J\
,
1ake
the
adjustment
while
watching
th
e o
utput
l
eve
l
met
ers
and
li
s
tening
to
the
so
und
s of
both
spea
kers
. \\Then
the
amplifier is
adjusted
pr
ope
rly,
yo
u feel as
if
th
e so
und
co
mes
fr
om a
point
midway
between
th
e
two
spea
kers.
@
BLEND
Thi
s
knob
permits
continuous
shift
from
stereo
phoni
c to
monaural
reproduction
.
Turn
it co
unter-clo
c
kwi
se to
brin
g repro-
du
ction closer to
monaural
(
R+L).
For
co
mp
l
ete
mon
aural re
produ
ction,
turn
it
as
far
co
unter-
c
lo
c
kwi
se
as
possible.
Th
e so
und
s of the
righ
t and left sp
ea
kers
beco
me
sepa
rated \"hen you
turn
th
e
knob
cl
oc
kwi
se (R
and
L pe
rform
th
eir respec
tive
functions) .
Th
e best ster
eop
honic effect is
obtained
when you
turn
it
as
far
as possible_
@)
BASS
and
@
TREBLE
for L
Th
ese control the tone of
the
left
spea
ker.
@
BASS
and
®
TREBLE
for R
These
control
the
ton
e of
th
e
right
speaker.
@
®
@
-12
-
@)
VOLUME
Thi
s
knob
is used
to
co
ntrol
th
e
volume
of
the
tuner
, rec
ord
s
and
tap
es.
Turn
it
clockwise for
louder
reprodu
ct
ion.
To
redu
ce
th
e
\'01
ume,
turn
co
un
ter-clockwise.
@
SELECTOR
(input-selector)
TUNER:
For
receiving
bro
a
dca
sts
through
the
tuner.
PHONO:
For
playing reco
rd
s.
MlC:
For
us
in
g a mic
roph
one,
TAPE
HEAD
:
For
playing
tapes
on
th
e
t
ape
c1
eck
(directly
from
the
tape
head).
AUX
:
For
r
epro
du
cing \'oice
input
or
u
si
ng
the
MPX
adaptor.
@
MODE
(Stereophonic/
monaural switch)
Thi
s s
wit
ch is used to shift
from
s
ter
eo-
phoni
c · t6
mon
a
ur
al re
produ
ction
or
vIce
versa
.
STEREO:
Set
the
switch
at
this po
si
tion
for
stereo
reproduction.
Signa
ls f
ed
int
o
A come
out
of
A's
s
peak
er
and
tho
se fed
into
B come
out
of
B
's
sp
ea
ker.
STEREO-
REV
:
Thi
s position, too, is for
stereo
reproclu
ct
ion.
But
signals fed
into
A
come
out
of
B'
s s
peaker
a
nd
tho
se fed
into
B come
out
of
A's s
peak
er.
Choose
this position
when
th
e rig
ht
and
l
eft
are
r
e\'e
rsed
in
r
ep
rodu
ct
ion.
L+ R:
Signals
fed into
Land
H.
are
bl
e
nd
ed
into
one (L + R)
in
the
amplifier befor
e
th
ey
come
out
se
paratel
y
from
Land
R.
Signals
f
ed
into A
and
13
become
A+B
in
th
e amplifier
and
come
o
ut
of
the
spea
kers
of
A
and
13
in
the
form
of
tb
e
co
mbined
so
und
A+B.
R (Mon o R
):
Signals fed into A come
out
of
A's
and
B
's
sp
ea
kers. Use this pos
i-
tion for
reprodu
cing
mono
broad
casts
and
tape
s.
L (Mono L):
Signals
fed
into
B co
me
out
of
A's
and
B's sp
ea
ker
s.
Thi
s position is rarely u
secl
.
OPERATIONS
RECORD
PLAYING
1.
Set
the
"SELECTOR"
switch
at
"
PHONO".
2.
Set
the
"MODE"
sw
it
ch
at
"
STEREO
"
or
"S
T EREO-
REV
"
(at
R
or
L in case of mon-
aura
l
operat
ion
).
3.
Sw
itch on
th
e player, put
on
a record
and
adjust
the
numb
er of
revolutions
as
ne
cessa
ry
before placing
th
e
pickup
on
th
e record.
4.
Balance
the
so
und
s from
both
s
peakers
by
me
ans of
the
"BALANCE"
knob
while
wat
c
hing
the
output
level meters.
.
5.
Adju
st
the
amount
of
sound
by
means
of
the
"VOLUME"
knob.
Other
adjusting
knobs
and
switches
can
be used to
get
the
most
satis-
factory
repreduction
.
When
you play a
monaural
record
on
a
stereo
record player, follow
the
same
procedure
as
for stereo
re
cord
s.
Thi
s will
give
you
better
re
sults.
Catridg
es
are
either
ma
gn
et
ic
or
crystal. Both
can
be used
with
the
AU-70,
but,
if possible,
use a
magnetic
type for
the
highest
fidelity.
If
you feel
that
right
and left
are
r
eve
rsed
when
playing a st
ereo
record,
turn
the
"MODE"
switch to
"STEREO-REV".
To
balance
th
e
sound
s from
both
speakers, play a monaural
record in
the
sa
me
way
as
a stereo record
an
d
adjust
the
"BALANCE"
switch in such a
way
that
you feel
th
at
the sound co
me
s from a
point
midway
between
the
rig
ht
and left speakers.
In
this
case, you can
count
on
th
e
output
l
eve
l
meters
for a
rough
det
er
mina
ti
on of
the
balance.
Also,
make
sure
that
th
e
"BLEND"
knob
is
kept
at
the
point
wh
ere it ca
nnot
be
turn
ed
clockwise
any
further.
When
you supply
power
to
the
player
from
the
power-plu
g receptacle on
th
e back of
your
amplifier,
do
not
fo
rget
th
at
the
player
is
sw
itch-
ed off
when
you
switch
off
th
e
amp
lifier.
BROADCASTS
In
the case of A and B above:
1.
Set
the
"SE
LE
CT OR" switch
at
"TUNER"
.
2.
Set
the
"MO
DE
" switch
at
"STE
RE
O"
or
"STEREO-REV"
in
the
case of A
and
at R
or
L (according to
the
cha
nnel
selected) in
the
case of
B.
3.
Tun
e in
with
th
e
tun
er.
4.
Use
other
adjus
ting
knob
s
and
switches
to
get
th
e
mo
st
sa
ti
sfac
tor
y performance.
In
the
case of C
1.
Set
the
"SELECTOR"
s
witch
at
"AUX"
2.
Set
th
e
"MODE"
switch
at
"STEREO"
or
"STEREO-
REV".
3.
Tune
in
with
the
tuner.
4.
Prepare
th
e
FM-MPX
adaptor
for
stereophonic
re
ception.
5.
Use
other
adjusting
knobs
and
switches
to
get
the
most
sa
ti
sfac
tory
performance.
When
you use a
tun
er
or
FM-MPX
receiver, read
th
e
instru
ctions for
th
em carefully.
There
should
be no mistakes in co
nne
ctions
and
operation.
When
you usc o
ur
T U -70, follow
the
instruction
s
for
A.
Wh
en you use
an
FM-tuner
(without
Multiplex)
and
MP·2,
fo
ll
ow
the
instructions
for
C.
USE
A
MICROPHONE
You can use
microphones
with
yo
ur
AU-70
amplifier.
Any
hig
h-imp
e
dan
ce (50 kilo-ohm)
crystal, dynamic or velocity mic
rophone
is accept-
able.
1. Set
th
e
"SELECTOR"
switch
at
"MIC".
2.
Set
th
e
"MO
DE
" sw
itch
at "
STEREO"
(when you use only
one
micro
phone
for
ste
reo-
ph
onic effect)
at
R (when you use
only
one
microphone
for
mo
naural
reprod uc
ti
on),
or
at
L+ R (w
hen
you mix
two
different
pro-
-
13
-
gram
sources from
tw
o
mi
c
rophon
es.)
3.
During
stereophoni
c
operation,
you can use
the
"BLEND"
knob
for
mixing
purposes.
4.
Other
adjusting
knob
s
and
switches can be
used for
the
mo
st satisf
ac
tory reproduction.
Remember
that
yo
ur
AU·70
accepts only high-
i
mpedance
micr
ophones. You
canno
t
get
the
best
perform
ance if you use too long micro-
phone
cord,
whi
ch causes \'arious
problems
and
re
du
ces treble. ·
Your
amplifier
ha
s separ
ate
tone'
co
ntr
ols for
right
and
left speaker
s.
You will find this
feature
very
useful
wh
en you use
one
micro-
phone
for
musi
c
and
a
noth
er
for voice.
Furth
er
-
more, it gives added
\,
ersatility to yo
ur
amplifier,
particularly
wh
en you record on
tape
what
is
pic
ked
up
by
microphones.
RECORD
AND
PLAY
TAPES
Your
AU·70
can be sed
with
a
tape
recorder
for
recording
and
pl
aybac
k
and
can also
play
tapes on
th
e
tape
deck.
If
you use a
thre
e
·h
ead
t
ape
re
co
rder
whi
ch
ha
s separ
ate
record
and
playback
heads
, you
can
make
reco
rding
s
while
li
sten
ing to a
repr
oduc
ti
on
of
the
recordings
.
In
oth
er
words, yo
ur
amp
lifier
can
be us
ed
as
a
monitor
which
lets you
know
th
e
quality
of
your
recordin
gs
while
th
ey are
being
made
..
RE
CORDING
Set
th
e'
"SELECTOR
" switch
at
the
prop
er
position
according
to
th
e
program
so
urce
(broad-
cas
tor
record) you
are
going
to record.
2.
Set
"MODE"
switch
at
"STEREO
" (for
s
tereophonic
recording
),
at
R
or
L (for
monaural
recording),
or
at
L+
R (for
monaural
recording
of a
stereophonic
so
ur
ce).
3.
Prepare
the
tape
re
co
rd
er 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
th
ose
ot
the sound from
th
e spea
ker
s.
Wh
en you
record ' a broadcast
cir
record, you
can
obtain
be
tt
er results by co
nn
ecting
the
tape
. reco
rder
directly to
your
amplifier
in
stead of picking
up
th
e sound from
th
e
spea
kers with micro
phone
s.
PLAYBACK
1.
a) T
ape
deck
Set
the
"SELECTOR"
switch
at
"TAPE".
b)
Tape
recorder
Set
the "
TAPE
MONITOR
" switch
at
"ON".
2.
Set
the
tape
recorder
in
the
play position.
3.
Other
adjusting
kn
obs and switches can
be
used for
th
e most
sa
tisfactory
reproduction.
CAUTION
Wh
en you use a
Tape
Recor
der
, keeping
the
"TAPE
MONITOR
"
sw
itch
at
"ON"
the
"MODE"
switch is n
ot
operative.
If
you
wan
t to use
the
"MODE"
switch,
connect
the
recorder
o
utput
to
the
"AU
X" pin-j
ackso
n
th
e back of your amplifi
er
and
the "
TAPE
MONI-
TOR"
switch at o
ff
.
T
APE
MONI
T
ORING
To
use your
amp
lifi
er
as a
monitor
for a
thr
ee-
head
t
ape
recorder, follow
the
same procedure as
the
one
for
playing
tapes
on
a recorder. Vvhen
yo
u use a recorder,
read
the
instruction
manual
carefully to
avo
id
errors
in
connect
ion
and
oper-
ation.
U
nl
ess you use your
amp
lifier
as
a
tape
mon
i
tor
or
for playing a t
ape
with a
tape
recorder,
be s
ure
to
switch off the "
TAPE
MONITOR
" switch.
Connecting
a
tap
e reco
rder
can
be
done
by
using
either
a single-co
nnection
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.
-
14
-
HINTS
ON
USE
SPEAKER
POLALITY
If
the
phase
(polarity, viz.
+and-)
of
the
right
and
left
speakers
is
not
co
rre
ct, so
unds
at
the
center
of
the
frequen
cy
ran
ge beco
me
weak.
You
will particularly sense
an
attenuation
of bass.
To
ma
ke
s
ure
that
speaker
polarity is all
right
, play
a
monaural
record
on
a
stereo
record playe
r.
If
the
polarity
is
reversed you will
have
the
result
mentioned
above.
In
such a case, reverse the
polarity of
either
speaker.
(Connect
th
e - lead-
wire
to
+.)
When
both
speakers
are
thu
s
made
to
agree
in polarity, you , will feel as
if
the
so
und
comes o
ut
of a single spea
ker
placed
midway
between the
right
and
left speakers.
FUSE
The
amplifier does riot work
when
th
e fuse is
blown.
In
such a case, disconnect
the
power
cord
and
replace
the
fu
se
on
the
back of
the
amplifi
er~
Use
a 3
-ampere
fuse encased in a glass
tube.
Never
risk
the
dang
er of usi
ng
fine wire
or
a fuse of a
larger
capacity as a substitute.
If
the
fuse
has
burnt
out
because
the
amplifier
is
out
of order, locate
th
e
tr
ouble
and
repair
it before
re
pl
ac
ing
the
fuse.
The
fuse , blows if you
use
an
AC
plug receptacle
lar
ge
r
than
the
' specified
·
capacity
(SO
VA
for t
wo)_
HEAT
GENERATED
BY
AMPLI·
FIER
The
top
of
the
amplifier case becomes considerably
hot
after
many
hours
of
continuous
operation_
But
this
should
not
worry
you
because
air
vents
are
provided
on
the
top
and
back
of
the
case.
If
you
place
something
on
the
amplifier
or
put
it in a closed box,
or
keep
its
front
panel facing
Fig. 1
up, it mi
ght
go o
ut
of order.
CONNECTIONS
Wh
en you connect your
amp
lifi
er
to
a
tape
re
corder
or
tun
er,
be
s
ur
e to use an
adequately
thick shielded wires.
If
you use
untwi
sted vinyl
cord like those used for lights, you will suffer
from
hum
.
Furthermore,
do n
ot
,use a
wire
longer
th
an
2 meters
(about
6.5 ft.), bec
ause
the
lon
ger
the
co
nn
ecting
wire
is,
th
e greater the a
ttenuation
of
tr
eble beco
me
s.
For
connection to a
tuner
or
FM
adap
tor, use a
wire
1 to 1.5 m
ete
rs
(about
3.3 to 4.S ft.) long.
When
you use
the
amplifier
f
or
mo
naur
al
reproduction,
it is easier for
operation
to use
th
e
upp
er
R terminal for
connec
tion.
Be
s
ur
e to set
th
e
"MODE"
switch to the
conne
cted
ch
anne
l.
HUM
AND
HOWLING
Wh
en
you
pl
ay a
re
cord or
tap
e, you
may
some-
time
s h
ear
unpleasant
hummin
g or howling.
This
,does not
mean
th
at
y
our
amplifi
er
is defec
ti
ve.
In
mo
st cases,
hummi
ng
or howling
is
a result
of these causes:
If
you
place a r
ecord
player
0
11
or
near
th
e
speaker
box,
th
e vibrations of
th
e spea
ker
cabinet
caused
by
the
sound
waves
from the s
peaker
a
re
tran
s
mitted
to the
player
and
cause howling.
To
prevent
this, keep
the
record
player
away
from
the
speaker
cabin
et
or
put
a thick cus
hion
be-
tween
the
player
and
the
cabinet.
A low, buzzing
sound
wjll also
be
produced if you
do
not
use shielded wires for connection.
If
this
is
not
the
cause, exami
ne
the co
nnections
closely.
Make
sure
that
the
earth
and
live
end~
are
not
reversed so
th
at
the
motor
and
arm
a
re
inade-
quately
grounded.
-
16
-
CONNECT
PERLY
LEADWIRES
Fig
. 2
PRO·
Connect
lead wires properly to
the
s
peaker
an
d
oth
er
input
and
output
termin
al
s.
If
co
nnections
are
loose
or
touch
other
parts, yo
ur
amplifier will
not wo
rk
properly.
Moreover,
it
may
produce
noise.
If
you use
your
amplifier in s
uch
a
way
for a
long
time, it
ma
y eve
ntu
a
ll
y
break
down.
Fin
ally,
read
the
ins
truction
s for yo
ur
tuner
or
tape
recorder
carefully before you co
nnect
it to
yo
ur
amplifier.
LEVEL
METER
SWITCH
Thi
s
is
used to select
th
e most suitable
meter
sensitivity from
th
e
thr
ee
ranges
of 5, 10
and
25
watts.
The
variable
sensitivity is
intended
to
mak
e it easier to
watch
needle movem
en
t.
high:
up
to 5
watts
medium:
up
to 10
watt
s
lo\\':
up
to 25
watts
(maximum
o
utput)
Choose
the
approp
ri
ate
ran
ge
acco
rding
to
volume
l
eve
l you
want.
AC
OUTLET
The
AC
OlJtlets
on
the
back
panel
are
connected
or
disco
nnected
by
the
power
switch
on
the
front
panel.
The
total
capacity
is
SOV
A-30VA
and
another
50VA-
Be
sure
to
lise
them
within
the
limit.
WHERE
TO
BE
PLACED
The
amplifier should be installed to
the
place
as
given
below:
1.
Easy
to
ground;
2.
Floor
not
vibrated;
3.
Not
wet
and
dusty;
4.
Not
exposed to
the
sun;
5.
Well
ventilated.
-
16
-
Fig.
3
SERVICE
NOTE
Symptom
No
power
when
power
switch
is
pushed
on
Probable
Cause
1./
Defective
power
switch
.
2.
Defective
line
cord
.
Replace
.
Replace
.
What
to
Do
3.
Loose
contact
betwe
en
plug
and
socket
or
R
eco
ndition
or
re
pla
ce .
defective
plug
.
4.
Blown
fuse.
Replace
.
Power
indicator
is
lit
when
power
switch
is
pushed
on.
but;
A.
the
unit
does
not
work
at
all. 1.
Def
e
ctive
tube.
2.
Abnormal
voltage
in
tubes
and
o
ther
parts
.
B .
PNONO
and
TAPE
does
not
fu
nction.
1.
Defective
head
amplifier
(
transistor
section
).
2.
Defective
selector
switch.
3.
Loose
contact
or
short
-
circuit
between
input
terminal
and
pin
-
jack
.
4.
Defective
record
pla
ye
r.
tape
recorder.
or
others.
connected
to
the
unit.
5.
Defective
coupling
condenser
.
C.
Weak
sound
on
AUX
. 1.
Abnormal
voltage
in
power
circuit
and
PHONO
and
TAPE
.
other
parts.
A.
Normal
voltage
at
'
eve
ry
part
1.
Defective
fixed
resistance
.
but
weak
sound
on
AUX
2.
Short
-c
ircuit
in
ou
tput
transformer.
3.
Discharged
capacitor.
4.
Aged
tube
.
5.
Defecti
ve
slide
switch
or
selector
switch
.
I
,
If
again
blown
after
replacing.
check
power
transformer
(
T,
) &
path
condenser
(Cs,)
in
power
circuit
for
short-circuit.
Check
V
,
~
V
9
and
silicon
diodes.
Check
voltage
in
tube
and
other
parts
and
replace.
if
necessary
. If
voltage
is
OK.
check
AUX
input
circuit
and
hereafter.
Rep
l
ace
transistor
head
amplifier
unit.
Replace
or
repair
S2'20
and
/
or
S2e. S
2f
Replace
or
repair.
Replace
.
Re
plac
e
C,
and
/
or
Cs.
Check
and
repair
.
Check
R
,,~
R
,s
.
R
66~
R"
and
Compound
part
CRS01. CRS02.
Check
C
2
'
~
C
Z
"
C
a6
and
Ca,
tubular
electro
-
ly tic
capacitor
C2,. C
26
.
C.
o.
C"
.
--
-------------------+----------------
-------
------
~------------------------
--
---
I
B.
Normal
voltage
at
every
part
1.
Defective
selector
switch
.
but
weak
sound
on
PHONO
and
TAPE
. 2.
Abnormal
input
circuit
:
between
input
terminal
defective
shielded
wire
.
loose
contact
and
pin
·
jack:
3.
Defecti
ve
record
pla
y
er
.
tape
recorder
or
others.
connected
to
the
unit
.
4.
Defecti
ve
coupling
condenser.
5.
Discharged
by
pass
condenser.
-
17
-
Replace
or
repair
S
2"
S
20.
S
2e
. Sz
f.
S".
and
S
JO
Repla
ce
or r
epa
ir.
Replace
Check
C,. Cz•
C,.
C6• C,.
and
Cs.
Check
Cs.
C,.
C9•
and
C
'O
.
Symptom
A .
Distorted
so
und
on
AUX.
B.
Distorted
sound
on
PHO
NO
and
TAPE.
A .
Hum
on
AUX
.
Probable
Cause
What
to
Do
1.
Aged
tube
.
Check
V
,~
V
9
'
2.
Short
-c
ircuit
In
output
transformer
.
Check
and
repair
T z
and
T 3
3.
Defecti
ve
loudspeaker.
Replace
.
4.
Defective
record
pla
y
er.
adapto
r
or
others.
Replace
connected
to
the
unit.
l.
Defecti
ve
record
pla
ye
r.
tape
rec
order
or
Replace
.
o
th
e
rs
.
connected
to
the
unit.
2.
De
fecti
ve
tubular
elect
r
oly
tic
capacito
r.
3. Di
scon
ne
c
tion
at
fixed
resistance
.
l.
Electrol
ytic
capacit
or
di
scharged
.
2. D
efec
t
ive
tube.
Replac
e
C,
and
/
or
C2.
Chec
h
R
2
,
~
R
az
.
R •. R,a. R
...
R
15
• R
'6
. R
17
• R'B.
R'
9.
R
zo
. R2,
and
R
22
.
Check
Ca
,.
C66
~
C'
3
.
C76~C77'
Check
V,
~
V
9.
3.
Def
ective
record
pla
ye
r.
ada
pt
or or
others.
R
ep
lac
e.
connected
to
the
unit.
4.
Hum
balancer
not
properl
y a
dj
uste
d.
Check
VR
.. a
nd
VR
".
5. Dis
connected
NF
r
esistor.
Ch
eck
RS2
and
Rs3.
B .
Hum
on
PHONO
and
TAPE.
l.
D
efec
tive
shielded
wire
and
/
or
wrong
con-
Replace
a
nd
connect
correctly
nection
of
record
pla
ye
r.
tape
reco
rder
or
others
.
2.
Audio
system
and
shielded
wire
induced
f rom
outside
.
3.
Residual
hum
of
audio
sys
tem
co
nnected
to
the
unit.
A .
Noise
on
AUX
and
TUNER
. 1.
Fix
ed
resistor
badly
connected
or
touched
by a
nother
part
.
Keep
prop
er dis
tance
between
audio
system
and
inductor.
Replace
or
repair.
.
2.
Capacitor
nearly
short-
cir
cui
ted
or
touched
Check
C'6. C
S7
• C60 • C6, .
by
another
part.
3.
Primar
y coil
of
output
transformer
nearly
Check
T z
and
T
a.
dis
co
nnected.
4.
Defecti
ve
tube
. Check
V,
~
V
9.
B .
Noise
on
RHONO
and
T A
PE
.
1.
Fixed
resistor
defective
or
ne
a
rly
discon-
Check
R
7~
R
a2
nected.
2.
Defecti
ve
capacitor.
Check
C
,~ClO
3.
Noise
or
bad
connection
of
audio
system
Replace
or
repair
connected
to
the
unit.
---
18
-
PARTS
LIST
Part
No
.
Nomenclature
RI
R2
R3
R4
Rs
R6
R7
RB
R9
R
Io
RII
RI2
RI3
R
I4
R
I5
R
I6
R
I7
RIB
R
I9
R
20
R
21
R22
R
23
R
24
R
25
R26
R
27
R28
R
29
R
30
R
31
R32
R33
R
34
R
3S
R36
R37
R
38
R
39
R40
R41
R
42
R
43
R44
R4s
R46
R
47
R
48
R
49
R
so
SKn
J{
Watt
± 10%
Carbon
Fixed
Resistor
SKn
J{
Watt
± 10%
Carbon
Fixed
Resistor
100Kn
J{
Watt
±10
%
Carbon
Fixed
Resistor
100Kn
J{
Watt
± 10%
Carbon
Fixed Resistor
IS0Kn
J{
Watt
± 10%
Carbon
Fixed Resistor
IS0Kn
J{
Watt
± 10%
Carbon
Fixed Resistor
170Kn
J{
Watt
± 10%
Carbon
Fixed
Resistor
170Kn
J{
Watt
± 10 %
Noise-less
Resistor
100Kn
J{
Watt
± 10%
Noise-less
Resistor
100Kn
J{
Watt
± 10%
Noise-less
Resistor
ISKn
J{
Watt
± 10%
Noise-less
Resistor
ISKn
J{
Watt
± 10%
Noise-less
Resistor
300n
J{
Watt
± 10%
Carbon
Fixed
Resistor
300n
J{
Watt
± 10%
Carbon
Fixed
Resistor
ISKn
J{
Watt
± 10%
Noise-less
Resistor
ISKn
J{
Watt
± 10%
Noise-less
Resistor
70Kn
J{
Watt
± 10%
Noise-less
Resistor
70Kn
J{
Watt
± 1 0%
Noise-less
Resistor
ISKn
J{
Watt
± 10%
Noise-less
Resistor
ISKn
J{
Watt
12Kn
J{
Watt
12Kn
J{
Watt
Ion
J{
Watt
Ion
J{
Watt
3Kn
J{
Watt
3Kn
J{
Watt
12Kn
J{
Watt
12Kn
J{
Watt
±10
.%
±10
%
Noise-less
Resistor
Noise-less
Resistor
± 10% .
Noise-less
Resistor
± 10 %/
Carbon
Fixed Resistor
± 10%
Carbon
Fixed
Resistor
±10
%
Noise-less
Resistor
± 10 %
Noise-less
Resistor
± 10%
Carbon
Fixed Resistor
± 10%
Carbon
Fixed
Resistor
16Kn
J{
Watt
±10
%
Carbon
Fixed
Resistor
16Kn
J{
Watt
±10
%
Carbon
Fixed
Resistor
SKn
J{
Watt
± 10%
Carbon
Fixed Resistor
SKn
J{
Watt
±10
%
Carbon
Fixed Resistor
SOKn
J{
Watt
± 10%
Carbo
l)
Fixed Resistor
SOKn
J{
Watt
± 10%
Carbon
Fixed Resistor
2.
SKn
J{
Watt
± 10%
Carbon
Fi
xed
Resis
tor
2.SKn
J{
Watt
± 10%
Carbon
Fix
ed
Resistor
IS0Kn
Yz
Watt
± 10%
Carbon
Fixed
Resistor
IS0Kn
Yz
Watt
± 10%
Carbon
Fixed
Resistor
100Kn
J{
Watt
± 10%
Carbon
Fi
xed
Resistor
100Kn
J{
Watt
±10 %
Carbon
Fi
xed
Resistor
ISOKn
Yz
Watt
± 10%
Carbon
Fixed
Resistor
ISOKn
Yz
Watt
± 10%
Carbon
Fixed
Resistor
400Kn
J{
Watt
±10%
Carbon
Fi
xed
Resistor
400Kn
J{
Watt
± 10%
Carbon
Fixed
Resistor
I.S
Kn
J{
Watt
± 10 %
Carbon
Fi
xed
R
es
i
stor
I.SKn
J{
Watt
±10%
Carbon
Fixed Resis
tor
SMn
Yz
Watt
± 10 %
Carbon
Fi
xed
Resistor
SMn
Yz
Watt
± 10%
Carbon
Fixed Re
sistor
100Kn
Enclo
sed
in
CRS02
100Kn
Enclosed
in
CRS02
-
19-
Part
No
.
Nomenclature
RSI
RS2
RS3
R
S4
R
ss
R
S6
R
S7
R
S8
RS9
R
60
R
61
R62
R
63
R
64
R
6s
R
66
R
67
R
68
R69
R
70
R
7I
R
72
R
73
R74
R7s
R
76
R
77
R
78
R
79
R
80
R
81
R
82
R
83
R
84
R
8s
R
86
R
87
R
8B
R89
R
90
R
91
R
92
R
93
R
94
R
9s
R
96
R
97
R
98
R
99
R
loo
ISKn
Enclosed
in
CRS02
ISKn
Enclosed
in
CRS02
100Kn
Enclosed
in
CRS02
100Kn
Enclosed
in
CRS02
SOKn
J{
Watt
± 10%
Carbon
Fixed Res
istor
SOKn
);,I
Watt
± 10 %
Carbon
Fixed
Re
sisto
r
80Kn
J{
Watt
± 10%
Carbon
Fixed Resistor
80Kn
J{
Watt
± 10%
Carbon
Fixed Resistor
I .
SKn
);,I
Watt
± 10%
Carbon
Fixed Res
istor
I.SKn
);,I
Watt
± 10%
Carbon
Fixed Resi
stor
2Mn
);,I
Watt
± 10%
Carbon
Fixed Resist
or
2Mn
);,I
Watt
± 10%
Carbon
Fixed Res
istor
IS0Kn
Yz
Watt
± 10% '
Carbon
Fixed Res
is
tor
IS0Kn
Yz
Watt
± 10%
Carbon
Fixed R
esistor
20Kn
1
Watt
± 10%
Carbon
Fixed Resistor
2Mn
);,I
Watt
± 10%
Carbon
Fixed Res
is
tor
2Mn
);,I
Watt
± 10%
Carbon
Fixed Res ist
or
2Mn
);,I
Watt
± 10%
Carbon
Fixed Res
is
tor
2Mn
);,I
Watt
± 10%
Carbon
Fixed Res
is
tor
1
Mn
);,I
Watt
± 10%
Carbon
Fixed
Re
s
istor
1
Mn
);,I
Watt
± 10%
Carbon
Fi
xed Resistor
SOKn
Enclosed
in
CRSOI
SOKn
Enclosed
in
CRSOI
SOKn
Enclosed
in
CRSO 1
SOKn
Enclosed
in
CRSOI
SOKn
Enclosed
in
CRSOI
SOKn
Enclosed
in
CRSOI
300n
);,I
Watt
± 10%
Carbon
Fixed Res
istor
300n
);,I
Watt
± 10%
Carbon
Fixed Res istor
I.SKn
);,I
Watt
± 10%
Carbon
Fixed Resis
tor
I
.SKn
);,I
Watt
± 10%
Carbon
Fixed Res
istor
2K
n
);,I
Watt
± 10%
Carbon
Fixed Resi
stor
2Kn
);,I
Watt
± 10%
Carbon
Fixed R
esistor
600Kn
Yz
Watt
± 10%
Carbon
Fix
ed
Resis
tor
600Kn
Yz
Watt
± 10%
Carbon
Fix
ed
R
esistor
IS0Kn
Yz
Watt
±10%
Carbon
Fixed Resi
st
or
IS0Kn
Yz
Watt
± 10% Car
bon
Fixed
Re
sistor
12Kn
);,I
Watt
± 10%
Carbon
Fi
xed
R
esisto
12Kn
);,I
Watt
± 10%
Carbon
Fi
xed
R
esisto
6Kn
);,I
Watt
± 10%
Carbon
Fi
xed Re
sistor
6Kn
);,I
Watt
± 10%
Carbon
Fixed R
esistor
30Kn
Yz
Watt
± 1 0 %
Carbon
Fi
xed
R
esisto
r
30Kn
Yz
Watt
± 10%
Carbon
Fixed
Re
sistor
SOKn
1
Watt
± 10%
Carbon
Fi
xed
R
esistor
30Kn
Yz
Watt
± 10%
Carbon
Fixed R
esistor
30Kn
Yz
Watt
±10%
Carbon
Fi
xed
Resistor
2S0Kn
);,I
Watt
± 10%
Carbon
Fi
xed
Resi
stor
2S0Kn
);,I
Watt
± 10%
Ca
'rbon Fixed R
esistor
2S0Kn
);,I
Watt
±10
%
Ca
rbon Fixed R
esistor
2S0KO
J{
Watt
± 10%
Carbon
Fi
xed
Re
sis
tor
Riol
RI
07
RI
03
R
I04
R
105
R
I06
R
I0
7
R
I08
R
I09
Rllo
R
11
1
R
I1
2
RI13
R
I14
RI
15
R
I16
R!
17
R
I18
RI
19
RI
20
RI21
RI
27
R
I23
RI
24
R
I25
RI26
R
127
RI
28
RI
29
RI
30
CI
C2
C3
C4
C5
C6
o
C8
C9
C
IO
Cli
C
I2
C
I3
C
I4
Cl5
Cl 6
C
I7
Cl8
C
I9
..
1
KD
)1
Watt
±
10
%
Carbon
Fixed
Resistor
1KD
)1
Watt
±1
0 %
Carbon
Fixed
Resistor
1KD
)1
Watt
±
10
%
Carbon
Fix
e d Res
is
tor
1KD
)1
Watt
±1
0 %
Carbon
Fi
xe
d
Resistor
40KD
)1
Watt
±1
0 %
Carbon
Fixed
Resist
or
40KD
)1
Watt
±
10
%
Carbon
F
ixed
R
es
is
tor
2SKD
)1
Watt
±
10
%
Carbon
Fixed
R
esis
tor
2
SKD
)1
Watt
±
10
%
Carbon
Fi
xed
R
esis
tor
SOKD
)1
Watt
±
10
%
Carbon
Fi
xed
R
esistor
SOKD
)1
Watt
±
10
%
Carbon
F
ixed
Resi
sto
r
16.0
10Watt
±
10
%
Wi
re
Wound
Resi
stor
16.0
10Watt
±
10
%
Wire
Wound
R
esis
to
r
30.0
1
Watt
±
10
%
Carbon
Fi
xed
Resistor
30.0
1
Watt
±
10
%
Carbon
Fixed
Resistor
2.
SKD
)1
Watt
±
10
%
Ca
rbon
Fi
xed
R
esis
to
r
2.SKD
)1
Watt
±
10
%
Carbon
Fixed
R
esist
or
SKD
)1
Watt
±
10
%
Carbon
Fi
xed
R
esist
or
lS0KD
1
Watt
±
10
%
Carbon
Fixed
Resistor
lSKD
.!1
Watt
±
10
%
Carbon
F
ixed
R
esis
tor
4KD
2
Watt
±
10
%
Carbon
Fixed
R
es
is
tor
2KD
10Watt
±
10
%
Wire
Wound
R
esis
tor
12KD
20Watt
±
10
%
Wir
e
Wound
R
es
istor
2kD
)1
Watt
±
10
%
Carbo
n Fixed R
esis
tor
SOOD
)1
Watt
±
10
%
Carbon
Fi
xe
d R
esis
tor
7KD
)1
Wat
t ±
10
%
Carbon
Fi
xe
d R
es
isto
r
7KD
)1
Watt
±
10
%
Carbon
F
ixed
R
esist
or
7KD
)1
Watt
±
10
%
Carbon
F
ixed
R
esistor
7KD
)1
Watt
±
10
% C
arbon
Fixed
Resistor
6KD
)1
Watt
±
10
%
Carbon
Fi
xe
d R
es
istor
2KD
)1
Watt
±
10
%
Carbon
Fix
e d R
esis
tor
30
/I
F
30
/I
F
30
f.l
F
30
/I F
30
f.l
F
30
f.l
F
10
f.l
F
10
/I F
30
f.l
F
30
f.l
F
0.06
f.l
F
0.
06
f.l
F
0.02S
f.l
F
0.02Sp F
O.Ol p F
0.
01
fl
F
lS0pF
lS0pF
0.
01
f-L
F
10WV
10WV
10WV
10WV
12WV
12WV
10WV
10WV
10W
V
10WV
SOWV
SOWV
SOWV
SOWV
SOWV
SO
WV
SOOWV
SOOWV
SOWV
El
ec
trolyti
c
El
ectr
olytic
El
e
ctrolytic
El
e
ctrolytic
El
ec
trolytic
E
lec
trol
y
tic
E
~c
trol
y
tic
El
ectr
oly
tic
El
ec
trol
y
tic
~
I
ec
trolytic
±
10
%
mylar
±
10
%
±
10
%
±
10
%
±
10
%
±
10
%
±
10
%
±
10
%
±
10
%
mylar
mylar
myla r
mylar
my
lar
mica
mica
mylar
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubula
r
tubular
tubula
r
tubula
r
tubular
tubular
tubular
-
20
-
Port
No.
Nomenclature
C
20
C21
C
22
C
23
C
24
0 5
C
26
C
27
C
28
C
29
C
30
C31
C
37
C
33
C
34
C
35
C
36
C
37
C
38
C
39
C
40
C
41
C
42
C
43
C
44
C
45
C
46
C
47
C
48
C
49
C
50
C51
C
52
C
53
C54
C
55
C
56
C
57
C
58
C
59
C
60
C
61
C
62
C
63
C
64
C
65
C
66
C
67
C
68
C
69
O.
Ol
p F
0.
003
p F
0.
003
p F
O. l p F
O. l p F
4 p F
4fl F
O.
OOl
f.l
F
0.001
f.l
F
lS0pF
lS0pF
0.
00
3/I F
0.
003
p F
0.03
fl
F
0.03
f-L
F
20
f-L
F
0.1
fl
F
0.1
f.l
F
30
p F
30
p F
4/I F
4p F
O.OOS
f.l
F
O.
OOS
fl
F
O.
OOS
f.l
F
O.OOS
p F
0.
01
p F
0.
01
f.l
F
300pF
300pF
2
00pF
2
00pF
2
00pF
2
00pF
30
f.l
F
30
fl F
0.2f.l F
O. 2p F
O.S
p F
O. S fl F
80pF
80pF
0.3fl F
0.3
f.l
F
O.3
f.l
F
0.3
p F
20
f.l
F
20
f.l
F
20
f.l
F
20
/I F
SOWV
400WV
400WV
2S0WV
2S0WV
2
0WV
20WV
400WV
400WV
Enclo
sed
En
close d
En
closed
En
clo
se
d
Encl o
sed
Encl
os
e d
300
WV
2
S0WV
2S
0WV
6WV
6WV
2
0WV
20WV
400WV
400WV
400WV
400WV
400WV
400WV
Enclosed
Enclo
se
d
Enclo
sed
Enclo
se
d
Enclo
se
d
Enclo
se
d
6WV
6WV
2
S0WV
2
S0WV
2S0WV
2S0WV
SOOWV
SOOWV
2S0WV
2S0WV
2S0WV
2S0WV
300WV
300WV
300WV
300WV
±
10
%
±
10
%
±
10
%
±
10
%
±
10
%
mylar
oil
oil
MP
MP
El
ec
tr
olytic
El
ect
rolytic
±
10
% oil
±
10
% oil
in
CRS02
in
CRS0
2
in
CRS02
in
CRS02
in
CRS0
2
in
CRS0
2
El
ec
trol
ytic
MP
MP
Electrol
y
ti
c
Electrolytic
El
e
ctrol
y
ti
c
El
ectr
olytic
oil
oil
o
il
oil
±
10
% oil
±
10
% oil
in
CRS01
in
CRS01
in
CRS01
in
CRSOI
in
CRSOI
in
CRS01
Electrolyt
ic
El
e
ctrolytic
±
10
%
MP
±
10
%
MP
±
10
%
MP
±
10
%
MP
±
10
% mica
±
10
% mica
±
10
%
MP
±
10
%
MP
±
10
%
MP
±
10
%
MP
El
e
ctrolytic
lug
Electrolytic
lug
Electrolytic
lug
Electrol
y
tic
lug
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubula
r
tubu
la r
tubu
lar
tubula
r
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubul
ar
tubular
tubular
tubula
r
tubular
tubular
tubular
tubular
tubular
tubular
tubular
term
i
nal
terminal
terminal
te rminal
Port
No
. N
omenclature
C
70
0 1
C
72
C
73
C74
0 5
06
C
77
0 8
0 9
C
80
C81
40
fl F
40
p F
200
,u
F
200
,u
F
O.
OOS
,u
F
SOOWV
Electrolytic
lug
terminal
SOOWV
'
Electrolytic
iug
terminal
300WV
Electrolytic
300WV
Electrolytic
600WV
±10%
600WV
±
10
%
lug
terminal
lug
terminal
oil
tubular
oil
tubular
O.
OOS
,u
F
SO
f.l
F
SO
,u
F
200
,u
F
SOW
V
2SWV
2SWV
2SWV
Electrolytic
tubular
Electrolytic
tubular
Electrolytic
tubular
Electrolytic
tubular
200
,u
F
O.OOS
,u
F
SOOWV
:t:
l
0~%
O.
OS
,u
F
400WV
±
10
%
Ceramic
tubular
oil
tubular
VRI
VR
2
VR
3
-VR
6
.
VR
7
VR
8
VR
lO
~
13
VRI
4
VR
I5
VI-V
3b
V
40-
V
5b
V
6-
V9
TR
I-
TR
4
TI
T
2.
T3
SD-
1B
SW
-
OS03
SI(o-
b)
S
2(0
-
1)
S
3(
0-
c)
S4(0-b)
S
5(0
-
b)
S
6(0
-
d)
S7(0-d)
S8
(0-b)
S9
(0-b)
SI
0(0-b)
Sl1
(a-b)
512
51
30,
1
3b
5140
,1
4b
COI-
2
OA
-
91
SOOKD (A)
Variable
Resistor
24
¢
type
loudness
tap
120KD
(
Volume
control
)
1
MD
(N)
Variable
Resistor
24
¢
type
(T
one
control
)
SOOKD (A.C)
Variable
Resistor
24
¢
type
(
Balance
control
)
SOKD
(B)
Variable
Resistor
driver
type
100.0
Hum
Balancer
driver
type
12AX7
Pre
amplifier
6AN8
Phose
splitter
7189A
Power
amplifier
Transistor
2SB-381
Head
amplifier
Power
transformer
Output
transformer
Si
diode
AC
(
RMS
)
280V
ID
SOOmA
-
60
°
C
~+
100
°C
Si
diode
AC
(
RMS
)
90V
ID
SOOmA
-
SS
o
C
~
+
100
°C
Cartridge
switch
Input
Selector
'
switch
Mode
switch
Tap
e
monitor
switch
loudn
ess
switch
T
one
defeat
switch
low
filter
switch
High
filter
switch
Presence
switch
Speaker
switch
level
meter
control
switch
Power
switch
level
meter
pilot
lamp
switch
level
meter
switch
AC
outlet
Ge
.
diode
VD
=
90V
ID=2SmA
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