Sansui Direct Drive
Electronic Transcription Turntable SR525
Sansui engineeres
and designers working on the SR-525 made no claims or promises until they were
sure of thier results. They knew they were on the trail of a significant
breakthrough in turntable execellence. And they were right. Now that the new
direct-drive SR-525 is ready for marketing, thier secrets can be revealed: One,
they have refined the rotor position sensor mechanism in combination with a
20-pole, 30-slot brushless DC servomotorwith a saturable core to perfect the
most accurate, most silently running direct-drive system the industry has ever
seen.
Two, they have
lowered wow and flutter to a negligible 0.03% and boosted S/N toa high 64dB
with the use of mirror-finishedspindle and sleeve combination. Three, they have
used the finest Sansui S-shaped tonearm, incorporation a special
resonance-absorber (Pat. pend.) for it tototally eliminate resonance and used a
knife-edge support system to ensure the lowest friction performance they've
ever achieved.
And finally, the
SR-525 is equipped with a solid, die-cast aluminium headshell, a stroboscopic
pitch control system, electronic speed-change controls and a number of other
advanced features to further guarantee maximum performance exceellence and ease
of operation.
The biggest secret
of the direct-drive SR-525 is how Sansui has held its price to and even below
the level of comparable belt-drive models.
And that's one secret they're not sharing.
Specifications
SR-525
Type: manual single record playing transcription
turntable
Motor: 20 pole, 30 slot DC brushless type
Drive: Direct spindle derive, electronic ally
servo-controlled
Platter: 310 mm (12-1/4") aluminum die-cast
weighing 1,4 kg (3,1 lbs)
Wow and Flutte: less than 0,03% (WRMS)
Signal-to-Noise
Ratio: better than 64 dB (IEC-B)
Rumble: better than -72 dB (DIN-B)
Recoed
Speeds: 33⅓, 45 rpm
Fine
Speed Adjustment: ±3,5% (separate knobs
33⅓ and 45 rpm)
Speed Control: Illuminated stroboscope with marking on he
platter periphery
Tonearm: Statically-balanced S-shaped resonance-free
tonearm with knife-edge support, adjustable height
Length: 220 mm (8-11/16") pivot to stylus tip
Overhang: 17,5 mm (3/4")
Friction (10 mm
deflection):
20 miligrams
vertical
100 miligrams
horizontal
Minimum Tracking
Force Setting: 0,5 grams
Acceptable Cartridge
Weight: 4 - 11 grams
Compensation: Bias and Lateral Balance
Cueing: Separate lever at arm base
Cartridge: SV-27A (for SR-525 sold outsaide the USA,
Europe, Canada)
Type: Moving Magnet
Frequency
Response: 10 - 23,000 Hz
Channel
Separation: 25 dB (1 kHz)
Output Voltage: 3,5
mV per channel (1 kHz 50mm/sec.)
Optimum Load: 47,000 ohms
Tracking Force: 1,5 - 2,0 grams
Stylus: SN-27 0,5 mil diamond spherical
Cabinetry: 40 mm thick chip-board base with anti-howling
insulators and hinged free-stop tinted cover
Power
Requirements: 100 - 120 / 220 - 240 V,
50/60 Hz
Power
Consumption: 5 watts
Dimensions (W x H x
D): 469 x 150 x 375 mm (18-1/2 x 5-15/16
x 14-13/16 inch)
Weight: 9,5 kg (20,9 lbs) net
Accessories:
45 rpm record
spindle adaptor,
Low capacitance - 40
pF/m- output signal cable,
Cartridge mounting
gauge
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