Sony PS-X70

May
1 9 7 8 may 1978
1 9 8 1 1981

The PS-X70 was carefully engineered :
BSL motor with Magnedisc barium-ferrite readout, urethane-coated Litz wires, carbon-charged tonearm, gold-plated contacts and adjustable VTA.

The J-shaped tonearm is a PUA-7 (available separately for 30,000¥) and a simplified version of the PUA-9 fitted on the PS-X9 masterpiece - ain't this neat ?

The PS-X70 was also carefully designed with Sony's unmatched mix of shiny & matte textures & assorted colors - looks do count as well when it comes to sales :)


Along the PS-X50, the PS-X70 is the original of the series : the PS-X60 and PS-X40 are later versions.

Like the earlier PS-X7, the X70 turned out to be one of Sony's bestselling turntable - and it wasn't cheap. The entire series is part of the most sold japanese turntables : there are tens of thousands of them around.


Add in a Denon DL-160 or a Sony XL-55 (the PUA-7 deserves good moving-coil cartridges, even heavyweights like the old DL-103) and you will be stunned by the results.

Quality, reliability and convenience all rolled into one : japanese engineering at its best.

The previous image comes from an october 1979 japanese turntables catalog.

This one is from a circa june 1979 canadian dedicated catalog.

The brushless & slotless motor...

...used in most Sony turntables between 1977 and 1981.

The PUA-7 tonearm.

Although available separately, it is here fixed to the X70.

The PUA-7 tonearm's guts : internal wiring and FG-Servo motor for the arm's movements when used in automatic mode.



Printed in many eastern and western catalogs, these images are always small and badly printed...

#

Speed accuracy :
Wow & flutter :
S/N ratio :

Platter :
Platter + mat weight :
Moment of inertia :
Full speed ahead :

Tonearm balance :
Pivot to stylus length :
Overhang :
Adjustable VTA :
Stylus range :
Anti-skating range :

Cable capacitance :
Dimensions :
Weight :
Tag :

±0.002%
0.025%
75dB (DIN B)

32cm
2,2kg
340kg/cm2
1/4 rotation

static
235mm
14mm
± 3mm
0...2,5g
0...2,5g

45pF/m
48,1 x 15,6 x 42,1cm
12,8kg.
79,800¥ (1978)


FEATURES
> Direct Drive system
> Fully automatic operation
> BSL motor
> Magnedisc servo control
> X-tal lock
> Die-cast aluminium platter
> Quartz drive strobe light
> Discrete FG servo-controlled tonearm motor

> Litz wire tonearm leads
> Rapid start-up and speed change
> Logic IC controlled function sequencing
> J-shaped carbon fiber tonearm
> Quick-stop electromagnetic braking
> Fine adjustment of speed
> Adjustable VTA
> Gold plated contacts
> 4-clamp headshell connector

> Audio muting
> Luminous sensor for tonearm return
> Tonearm safety clutch
> Viscous damped cueing
> Direct-read anti-skating
> Direct-read counterweight

> Zinc alloy tonearm base
> SBMC cabinet
> Feather-touch controls
> Viscous filled height-adjustable feet
> Spare headshell holder
> Removable spring-loaded cover

Thanks to Patrick Koman, major V-Fet, Esprit and pre-Esprit collector,
for these images of his PS-X70 !


Underside

Sony PS-X70 users area - Image n°1



The PUA-7, dismantled for cleaning.

Sony PS-X70 users area - Image n°2

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