Caution:
Handle
the motor
pulley
carefully
A
bent
pulley
causes
rumble.
Stock
numbers
for motor
PulleYs:
For 60
Hz,
No. 220 971
for 50
Hz,
No. 220 970
Removing
the turntable
platter
The
platter
is secured
by a C-ring
seated
in a
notch on the
turntable shaft. Use
a
screwdriver
to
remove the C-ring,
then lift
off the
platter.
Fig.23
lmportant:
When
handling
the
platter
avoid
touching the inner surf aces
with
your
fingers
as
skin oils can cause slippage
(and
resulting
pitch
deviation) between the
idler wheel and the
driving
rim of the
platter.
Adjusting tonearm set-down
position
With automatic start,
the
stylus
descends
automatically Into the outer
groove
of the
record. lt is
possible,
due
to
peculiarities
in the mounting of a
cartridge,
that the
stylus may land too far in
or
too far out
on
the
record.
lllr-
=
t'*:
t
ln
that case, set the
record
size selector
for
a 12" record
(30
cm).
Through the hole
next to the tonearm rest,
you
will
see an
adjustment screw. lf the stylus lands
too far
into the record, turn the screw
very
sightly to the left; if it lands
too
close to
the
edge, turn it slightly to
the
right.
Service
All
parts
that require lubrication are liber-
ally coated with
oil.
Under
normal condi-
tions,
your
Dual
will function
perfectly
for
years.
Do not
oil any
parts;
special
oils
must
be
used.
Should
your
Dual
ever
require
service,
either take it to
your
dea-
ler
or ask him for the
address of
the
nearest
authorized Dual
service agency.
Be
sure that
original Dual
replacement
parts
only are
used. Always
ship
your
Dual
in
its original
packing.
Technical data:
Phonochassis:
Hi-Fi
turntable Dual 1215
Amplifier:
Power output
(measured
at 4 ohms)
2 x 6 Watt Music
output
2 x
4
Watt continuous
tone
lnputs:
1. Phono
ceramic,
equalization
acc.
to
RIAA,
sensitivity 120
mV at
560
kO
2. Tape,
linear,
sensitivity
600
mV
at 470 kQ
3. Tuner, linear,
sensitivity
600 mV
at
470
kQ
Frequency
range:
25-30
000 cps
+
3 dB
Tone
control:
Treble
+
t4dB
at 10,000cps
Bass
+14dB
at 100cps
Volume
control:
with
tone contour
control, operative
on
both
channels
Balance
control:
control
range 1
0 dB
Current
requirements:
approx. 135
mA
Turntable
speeds: 331A,45
and
78 r.p.m.
Stereo-mono
switch
Outputs
two
separate
speaker
jacks
for
impedances
of 4-l
6 ohms
Tape
50 mV at
'l
00 kQ
Signal-to-noise
ratio:
at all inputs
> 60dB
Crosstalk:
>
40
dB at 1,000
cps
Power
consumption:
approx.
30 VA
Voltages
110't1501220V,
after
resoldrering
1 30/1
50/240 V
(wiring
diagram
on the
mains transformer)
Current:
alternating,
50 or
60 cycle
Fuses
at220Y
160
mA
slow-blow
at 1 10/1
50 V
315
mA
slow-blow
Complement:
1
selen rectifier,
S silicon
transistors,
4
germanium
transistors,
2
silicon
diodes,
1
fuse I
A
quick
for
output
stages
Loudspeaker:
2 loudspeakerboxes
with
I
each I0
Watt
special
speaker
Dimensions:
base
complete
with
cover
CH
5,
420
x377
x 204
mm
loudspeakerboxes
363x
23Ax162
mm
each
Weight:
base
complete
with
cover
CH
5,
19.2
kg
loudspeakerboxes
4 kg
each
Fig.24
r3
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