Philips GA 312
2-Speed Belt-Drive Turntable
The Philips GA312 is a sprung chassis, belt-driven turntable with electronic speed control.
Stylus force on the GA312 is set by means of the slide weight on the pick-up arm after this is balanced with the counterweight.
The player is equipped with an adjustable anti-skate which applies a pre-set force to the arm counteracting this phenomenon.
The motor speed is continuously controlled and kept constant by solid state circuits in combination with a tacho-generator which is directly coupled to the motor shaft.
The platter and the pick-up arm are mounted on a sub-chassis, which is damped, spring suspended from the rigidly mounted main chassis, absorbing mechanical shocks and external vibrations.
Drive method: belt drive
Speed control: electronic
Speeds: 33 and 45rpm
Speed adjustment range: +-3%
Wow and flutter: 0.1%
Arm friction: 15 mgf
Stylus force: 0.75 to 4g
service manual - gridleakrick
service supplement - gridleakrick
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Philips GA 312 / GA312 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 Philips.