Micro seiki dd 40 owners manual

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MICRO SEIKI

- D - D

OPERATING MANUAL

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DD-4O Features

Ilmproved torque FG servo motor
results in advanced drive charac~
teristics.

Superb stability of speed together with

increased torque have been achieved

by employing an F6 servo motor.

With this kind of motor, neither loca-

tions subject to temperature fluctua-

tions nor current fluctuations in the

AC line contribute to variations in the

platter speed.- Consequently a smooth

stable speed, featuring a wow and
flutter of less than 0.028%, is assured.

In addition, this almost vibrationless

unit achieves an S/N ratio of more

than 62 dB.

IMA-505 dynamic balance tonearm
for low tracking force.

The MA~505, an ideal dynamic balance
type tonearm, permits tracking force
to be applied linearly during playback.
The spring tracking force application
system which allows linear tracking
force adjustment between 0.25 - 3
grams, is totally uninfluenced by
factors such as turntable location con-
ditions or record pressings. Further-
more, at low tracking force settings
the tracking is exceptionally stable,
resulting in unsurpassed performance
with high compliance cartridges.

IPrecision spring and tungsten wire
ensure long life and unchanging ac-
curacy.

The MA.505 tracking force application

spring and tungsten wire ensure lasting

quality without the deterioration
problems typical of conventional
dynamic tonearms.

Set at a tracking force of 39., the

force applied to the spring is equal to

15 kg/mmz. The MA-505's spring

however, with a breaking point of

45 kg/mm2 provides an ample re-

liability margin. Moreover the greatest

force applied to the tungsten wire is

65 9.; but again, this wire is tested to

4.5 kg, a fact which eliminates snap-

ping or stretching problems.

I MA-SOS tonearm incorporates many
revolutionary features.

0 Tracking force adjustment mech-

anism.
The tracking force adjustment mech-
anism, independent of the tonearm
rotation section, can even be re-
gulated during playback. Thus a
tracking force most suited to the
listening room conditions can be
selected.

a Anti-skating device
This mechanism can be adjusted to
suite different tracking forces or
differing stylus configurations.

0 Arm height adjustment mechanism
The tonearm height can be adjusted
easily by means of this mechanism
which incorporates a spring built
into the base.

I A solid King Rosewood base.
The solid base, Palisander-Rose finish-
ed pressed-board, together with the
large~size shock absorbers are designed
to minimize 'acoustic feedback, and
permit the finest possible sound
quality.

0 MA-505 mechanism and principles
of tracking force application

Tracking force Anti-skating regulation knob Antioskating wire

adjustment knob \ Wire guide

Lateral balance weight

Precision wire guide bearing

Precision spring

Arm lift lever -

Arm height adjustment lever Wire guide Anti-skating regulation shaft

Tracking force adjustment reel Precision bearing

Precision spring

Profile diagram Tracking force is applied by turning the tracking lorce adjustment
knob, which in turn exerts tension on the tungsten wire and hence
to the spring.