Automatic
Direct-Drive Turntable
Sansui wants
everyone to enjoy hi-fi music with the minimum possible noise, distortion and
inconvenience. That's why the Sansui SR-535 automatic direct-drive turntable
puts the emphasis on pure hi-fi performance and true handling ease. Accuracy of
platter rotation, and a strong, anti-howl construction characteristics in the
musical department. The direct-drive motor is a high-torque type and the
special tonearm has a unique support to ensure delicate performance. Record
reproduction is always clean and pure.
One simple control,
the Auto/Manual Play Lever, does all the work. Put a record on the platter, set
the record-size selector and pull the lever once; the tonearm is lifted, moved
and gently lowered to the lead-in groove, when the record ends, the arm is returned
to its rest and power shuts off automatically. The same lever permits manual
play when desired. More convenience is offered in the Repeat facility
permitting you to select one to five replays, or infinite replay.
Automatic Operation
One control knob
does it all. The jumbo-sized Auto/Manual Play Lever has three positions of
Manual On, Off, Auto Start/Stop. For a single automatic play, you simply place
a record on the platter and gently pull the Auto/Manual lever into the Auto
Start/Stop position. The tonearm lifts automatically as the platter begins to
spin, the stylus is placed over the lead-in groove of the record, and the
tonearm descends to begin play. If you desire to interrupt play at any time,
simply pull the lever again, or you may wait till the record ends. In either
case, the arm is automatically lifted
and returned to its rest, and power is switched off, all without your
assistance.
When manual play is
desired, simply set the control lever to the Manual On position. When the
platter begins to rotate, move the stylus to over the part of the record you
want to hear. An oil-damped Cueing Lever is provided to help you avoid damaging
your valuable records. As in Auto Play, the Manual position on the lever allows
the automatic return mechanism to return the tonearm to its rest.
Additional
convenience Auto Repeat control on the SR-535.
In the Off position
if sets the turntable in auto-return mode. Or, you can select from
"1" to "5" repeat plays, or "infinite" which
allows the automatic mechanism to continuously repeat its simple job until you
change the repeat control settings.
Accurate Drive
System
Sansui
engineers have done if again. The platter of the Sr-535 never shows any
appreciable slow-down under reasonable loads. This means that your 33-⅓ and 45
rpm records are always played at the correct speeds for best musical
performance. This accuracy is assured by an advanced, high-torque,
20-pole/30-slot brushless DC type servo motor for direct drive. Speed drift is
effectively eliminated by the Sansui-exclusive rotor position sensor mechanism,
coupled with the motor's bias-controlled saturable core (Sansui Pat. Pend). Thanks to the dependable power supply, the drive
voltage is kept constant for accuracy under any conditions.
Mechanically, as
well as electrically, the SR-535 has impressive precision. All components and
parts are designed, machined and assembled under very careful super-vision to
live up to Sansui's strict quality control standards. The bearing sleeve is
mirror finished for complete roundness, for instance. The motor shaft/center
spindle is formed of the finest polished carbon-chrome steel and rides in a
thrust bearing of tough friction-resisting synthetic polyamide. We've used a
special lubricant, one developed by the aerospace industry, to ensure low
friction in the motor over long years of operation.
Smoother
rotation is also ensured by the heavy (1,4 kg ) aluminum die-cast platter.
This, plus Sansui's attention to every minor point in design and construction,
gives the Sr-535 impressive specifications low 0,038% wo/flutter and better than 67 dB rumble.
Fine speed
adjustment with strobe
On
the edge of the oversized (31,8 cm or just over 12-inch) platter there are four
rows of stroboscopic patterns, two each for both speeds to permit fine adjustment when your electrical power is either
50 Hz or 60 Hz. The strobe light illuminates the platter edge so that you can
visually check its rotation speed for accuracy. Once the correct speed is
reached, the speeds will continue to spin accurately, or you can use two fine
speed controls to vary platter by as much as ±3,5% from the standard speeds. By
the way, these controls are recessed to avoid accidental speed change.
Stabilized Tonearm
Exceptionally high
tonearm stability is one of the reasons the Sansui Sr-535 performs with such
high musicality. Despite the attractive price of this fully automatic
turntable, the tonearm has the same stability and resistance to resonance found
in much more expensive models. Spurious vertical travel and harmful torsion or
twisting are avoided by a special support with two vertical pivots. The mass of
the arm is concentrated at these points to clearly define the unit's fulcrum
for better mechanical advantages, particularly in the bass frequencies which
are delivered from your record free of "mud".
Low-resonance design
Resonance is further
suppressed by the special acoustic absorbent, we use inside the highly rigid
tonearm tubing. Then, we've decoupled the balance weight from the arm shaft vis
a newly designed rubber damper. All types of vibration whether transmitted through the air or through the
physical structure, are shut out before reach the stylus.
Other tonearm
features:
Zinc-alloy die-cast
arm base; a massive heavy structure to improve bass response by firmly securing
the arm to the cabinet.
Direct
readout tracking force dial; precision-calibrated markings every 0,25grams one
rotation covers 0-to-3 gram range
Gold-plated
connection pins; free from all forms of rust to ensure maximum transfer of the
tiny electrical signals from cartridge to your amplifier
Arm lifter lever;
oil damped for smooth operation
Anti-skate
knob; adjustable even as the record
is played, another bonus in this attractively priced turntable.
Cabinet
Sansui designers
take special pride in the clean, modernistic looks of the SR-535 turntable. The
silver metallic finish sets off the precision lines of the cabinet and is just
"flat" enough to resist glare from room lights without appearing too
dull. The clean lines are more than good looking, advanced computer technology
and time-tested carpentry techniques alike were used in designing the Sr-535 to
resist acoustic feedback or "howling". The automatic mechanism is
mounted on a separate chassis inside the cabinet for instance while the
low-profile of the base and its complex suspension system further ensure good
sound.
Complex-suspension
To defeat all types
of vibration before they can harm your music, the SR-535 is suspended in a
complex system of rubber and spring devices. Air-borne vibration, such as
sound-waves from your speakers, and structure-borne vibrations, such as
originating from your operation of amplifier or receiver controls, from
footsteps, etc. Are effectively damped so that your music retains its tight
bass, clean mids and crisp highs.
Specifications
Type: two-speed, direct-drive automatic turntable
Motor: 20-pole, 30-slot DC brushless
Drive System: Direct spindle drive electronically servo
controlled
Platter: 318 mm aluminum alloy die-cast
Platter Weight: 1,4 kg (3,1 lbs)
Wow and
Flutter: less than 0,038% WRMS
Signal-to-Noise
Ratio (IEC-B) : better than 57 dB
Rumble (DIN-B)
: better than -67 dB
Speeds: 33-⅓ and 45 rpm
Fine Speed
Adjustment: ±3,5%
Tonearm: Statically-balanced S-shaped tonearm with
two-point pivot support
Length: 220 mm pivot to stylus tip
Overhang: 17,5 mm
Offset Angle: 24,5°
Minimum Tracking
Force Setting: 0,8g (when using
cartridge guaranteed to operate at 0,8g stylus pressure)
Acceptable Cartridge
Weight: 4 to 10 g
Cabinetry: Slim line
cabinet with anti-howling insulators and hinged free-stop dust cover
Cartridge: Sc-50
Type : Intermodulation Distortion type
Frequency
Response: 10 to 20,000 Hz
Output Voltage: 3 mV per channel (1,000 Hz , 35,4 mm/sec)
Optimum Load: 47 k Ω
Tracking Force: 2,5 g ±0,4 g
Stylus: 0,6 mil diamond spherical (SN-50)
Power
Requirements: 100, 120, 220, 240 V,
50/60 Hz
Power
Consumption: less than 9 watts
Dimensions (W x H x
D): 460 x 166 x 370 mm (18-1/8" x
6-3/16" x 14-9/16")
Weight: 9,2 kg (23,6 lbs) packed
