Sansui SR 626 Brochure

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DIRECT-DRIVE ELECTRONIC TRANSCRIPTION TURNTABLE

Sansui engineers knew they were
on the trail of a significant breakthrough
in turntable excellence as the prototype
of the SR-626 slowly took shape in our
development laboratories. And they
were right.

Its silent direct- drive system is built
around a 20- -pole, 30- slot brushless DC
servomotor with a saturable core. A new
rotor position sensor mechanism keeps
this super- quiet power system at precision

speed at all times

The advanced motor design a mirror-

fInished spindle and sleeve combination
and Sansui's attention to the smallest of
details have lowered wow and flutter to
a negligible 0.03% and boosted the
signal-to-noise ratio to a high 64GB.

A special knife-edge support system
ensures the lowest friction tonearm
performance ever seen. The Sansui
S-shaped arm is filled with a new reso-

nance-absorbing material (Pat. Pendl to
effectively damp all harmful resonance

Finally, the SR-626 has features like the
solid. die~cast aluminum headshell.
stroboscopic pitch controls electronic
speed-change controls and many others
to guarantee its performance excellence
and ease of operation From Sansui.
where it's all hi-fi.

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Exceptional -72dB Rumble, 0.03% Wow and Flutter

SUPER-QUIET POWER DRIVE

20-Pole Brushless DC Servomotor
Sansui has dared to redesign the direct-
drive power unit in the SR-626 to deliver
still more dazzling performance accuracy
than the run-of-lhe-mill directorives and
still keep the price competitive with belt-
drive models, Speed drift is effectively
eliminated with the use of a Sansui«

exclusive rotor-position sensor mechanism

coupled with the bias-controlled saturable
core (Sansui Pat. Pend.) in the newly-
developed 20-pole. 30-slot brushless DC
servomotor. A transistorized differential
servoamplifier assures that the high-
torque motor achieves constant rotation
in either speed (33% or 45 rpm) regard-
less of changes in tracking force or line
voltage fluctuations. Wow and flutter is
less than 0.03% WRMS. and rumble is
below -72dl3.

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Precision-Finished Spindle & Bearing
A superhard SUJ-2 material used for
the center spindle is specially sintered
and micron-finished to form a tight but
nearly frictionless bearing seal with the
mirror-finished sleeve. This precision
construction complements the accuracy
of the direct-drive mechanism to deliver
an outstandingly high signal-to-noise
ratio of 64dB regardless of changes in
temperature and ensures the non-deterio-
ration of original performance quality.

Strobe-Assisted Fine Speed Adjustment

The outer rim of the platter on the
SR-626 is engraved with dot-like strobo-
scopic calibrations. lf when illuminated
with the pulsing light of the built-in strob
lamp they appear to creep" forward or
backward. adjust the speed (:3.5%) of
the platter with the Pitch Controls.

HIGH-SENSITIVITY TONEARM

Specially-Damped S-Shaped Tonearm
The S-shape design of the tonearm
adds to the graceful good looks of the
SR-626 and provides the ideal tracking
angle. Inside the strong. chrome-finished
pipe arm is a newly-developed absorbent
(Sansui Pat. Pend.) which effectively

eliminates all tonearm and counterweight
resonance.

Knife-Edge Tonearm Support

Friction. a major deterent to proper
tonearm performance. is practically nil for
the SR-626's tonearm. In the vertical
plane. as little pressure as 20 milligrams
will cause the tonearm to lower 10 milli-
meters-a very sensitive ratio. This is due
to its sharp. long-wearing knife-edge
support. In the horizontal plane. tonearm
movement is equally free of friction as it
pivots on its ball-bearing races. These
quality systems assure that the tonearm
retains its original sensitivity for years.

{ ARM SUPPORT CROSS SECTION

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Glmbal rlm Arm plpo holder

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Upper thrust baarlng

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Arm base

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steel ball bearing

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Lower thrust bearlng

Glmbat ring

Arm pipe holder

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Other Tonearm Features

A one-piece headshell and finger of
die-cast aluminum reduces resonance
and adds strength. And of course the
tonearm has gold-plated connection
terminals to avoid electrical deterioration.
The die-cast arm base and the newly-
designed arm rest are further touches of
quality. and the fact that the height of the
tonearm is freely adjustable means you
may use almost any cartridge you wish
whatever its size. Low-capacitance output
cables are provided so that you may add
a CD-4 cartridge.

SOLID SLIM-LINE CABINET

Anti-Howl Cabinet

The solid mass and high internal loss
of the 40mm thick laminate wood tonearm
base means an end to cabinet resonance
("howling") and the elimination of image
blurring. especially in the lower frequen-
cies. lls specially-shaped motor cavity is
carved and smoothed with precision.

Natural Rubber Insulators and Acrylic
Cover

External vibration will never cause
mistracking or other problems in the
performance of the SR-626. The large.
natural rubber insulators (feet) on the
solid cabinet base absorb such potential
hazards before they can reach the
tonearm and cartridge. For further
convenience. the removable acrylic cover
has a free-stop hinge design and a good
looking. slim-silhouette shape to avord
resonance.

Simple Control Layout _
There are no unnecessary or compli-
cated knobs and switches on the SIR-626.
Every control is designed to operate wrth

maximum ease and is arranged on. the
cabinet base to afford maximum utility., _
The feeling and functionality of the Sansur
SR-626 will never become obsolete.