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Hitachi PS-48

2-Speed Direct-Drive Turntable (1976-1978)

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hitachi ps-48 direct drive turntable
Hitachi PS-48


The Hitachi PS-48 is a 2-speed, direct drive turntable system with the following features:

Unit-torque motor - the newly developed flat type non-rectification DC servo direct drive motor, which is completely different in basic structure from the conventional motor, is employed.

Torque is by definition, constant, so it rotates smoothly and quietly, and provides high performance S/N ratio and wow/flutter characteristics.

The initial high performance is maintained over a long period - the only system in the turntable drive which is in danger of getting worn is the motor bearing section.

However, wear and tear of the section is small and the initial high performance can be maintained.

Convenient automatic mechanism - an auto mechanism is built in which controls the rotation resistance of the tonearm making it small and this enables playing to be done with light stylus pressure.

When the record is finished or the auto-cut lever is pushed during play, the tonearm returns automatically and the turntable stops.

Speed adjustment by means of the neon lamp and stroboscope - speed adjustment can be easily done by means of a stroboscope and a neon lamp which are installed on the external edge of the turntable.

Employment of the low centre of gravity tonearm - by employment of the S-type low centre of gravity tonearm, the record is traced out faithfully.

Adjustment of stylus pressure done by a direct reading system by units of 0.2g.

Oil damped arm lifter - by using an oil damped arm lifter for lifting/lowering the stylus, there is little danger of damaging the record or stylus tip.

Structure resistant to howling - by use of large vibration-proof legs and cabinet as well as the installation of vibration-proof rubber to the arm installation section etc, the structure is resistant to howling.


Type: 2-speed direct drive system

Platter: 308mm 1.6kg aluminium alloy diecast

Motor: brushless DC servo

Speeds: 33.33 and 45rpm

Pitch control range: +-2.5%

Speed change-over system: electronic

Signal to noise ratio: 60dB

Wow and flutter: 0.025% WRMS

Tonearm: tubular static balance type

Overall length: 301mm

Effective length: 220mm

Overhang: 15mm


brochure  English Francais - peenosound

instruction/owners manual  English Deutsch Francais

service manual  English Deutsch Francais

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Hitachi PS-48 / PS48 owners manual, service manuals and schematics are for reference only and the Vinyl Engine bears no responsibility for errors or other inaccuracies. The PDF files are provided under strict licence. Reproduction without prior permission or for financial gain is strictly prohibited. This website is not affiliated with or sponsored by Hitachi.