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2-Speed Quartz-Locked Turntable (1976)

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The JVC TT-81 is a 2-speed, high-performance, professional motor unit which could be fitted in the CL-P1 plinth system or one of the users design depending on the application.


Motor: DC servomotor

Drive system: direct drive

Speeds: 33 and 45rpm

Speed detection: integrated frequency generator

Servo system: quartz locked positive and negative servo control

Starting time: within 1 second

Wow and flutter: 0.025% WRMS

Rumble: 63dB

Speed deviation: within 0.002%

Platter: 310mm diecast aluminium

Dimensions: 150 x 358 x 358mm

Weight: 8kg


service manual  English

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JVC TT-81 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 JVC.


TT-81 svc manual

It would be more helpful if someone could provide the schematic circuit diagram esp when we know that custom servo ICs are unobtainable. There is the possibility of a revision to the original design as long as we can see the details of the circuitry.