Dual 1209 Owners Manual

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Hi-Fi automatic turntable Operating instructions

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1209

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lines corresponding to the choosen speed
will appear to stand still when the turn-
table is rotating at the correct speed.
Pitch is varied by using the pitch-control
knob (D.

Fig. 21

Adapting Ior other power irequency

To adapt the unit for use at a different
power-line lrequency is accomplished by
changing the motor pulley (A), which is
secured to the motor shaft by a screw
and can be reached by removing the
turntable platter.

Fig. 22

Caution: Handle the motor pulley care-
fully, A bent pulley causes rumble.
Stock numbers for motor pulleys:

For 60 Hz. 218 274.

for 50 Hz, 218 273.

Removing the turntable platter

To remove and replace the spring-clip
that secures the turntable platter, use the
accessory cone-shaped piece provided
for the purpose. (Fig. 23 A, removing the
spring-clip); Fig. 23 B, replacing the
spring-clip)

Important! To avoid possible slippage
between idler, motor pulley and platter.
do not touch any of the running surfaces
with your lingers.

12

Fig. 23

Adjusting tonearm set-down position
With automatic start. the stylus descends
automatically into the outer groove of the
record. It 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.

Fig. 24

In 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 .. If the stylus
lands too far into the record, turn the
screw very slightly 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 specifications

Power supply:
alternating. 50 or 60 cycle
changeable by changing motor pulley

Power supply voltage:
110/117 and 220V switchable

Drive:
synchronous Iii-torque pole motor with radial-
elastic suspension

Power consumption:
10 watts approx.

Currenl drain:
54 ma approx. at 220 V, 50 cycle
115 ma approx. at 117 V. 60 cycle

Turntable platter:
non-magnetic, will, weighing 4 lbs.
dynamically balances

Turntable speeds:
33%, 45 and 7B r.p.m.

Pitch control variation:
adjustment range of approx. 1 semitone (6%)
at all three turntable speeds

Speed accuracy deviation:
< t 0.09% in accordance to DIN 45 507

Humble:
> 42 dB below signal level in accordance to
DIN 45 500

Weighted rumble:
> 57 db below signal level in accordance to
DIN 45 500

Tonearm:

torsionally rigid, all metal design With vertical
needle bearings, horizontal 2-layer precision
ball bearings in hardened and polished races.

Maximum tracking error:
< 1° 45'

Tonearm bearing Irlctlons:
(referred to stylus tip)

vertical: less than 0.01 gram
horizontal: Ises than 0,04 gram

Cartridge holder:

removable, suitable lor acceptance oi cartridges
havmg ll. mounting and possessing a weight of
1-12 grams.

Weight:
10.8 lbs. less packing

Dimensions:
12%" X 10%

Mounting cutouts:
see installation instructions