Quote:
Originally Posted by Kal Rubinson
First? Decades ago, I had a Stanton turntable with a mag-lev platter which worked exactly as it was designed to...........................poorly.
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Quote:
Originally Posted by Puma Cat
Yeah, when I saw videos of it playing, the platter was really wobbly. Looked to be an absolute disaster of a design.
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Exactly. The platter is suspended by magnetic force from below balancing the downward gravitational force due to its mass. In total isolation, this is stable.
OTOH, the observation of the wobbly platter indicates that there are other factors in play. One is that any vibration of the plinth which holds the magnetic force generator disturbs the somewhat resonant magnetic/gravitational balance and the platter wobbles with respect to the plinth.
Unfortunately, the tone arm is fixed to the plinth and not to the platter. As with my late Stanton turntable, the result is a constantly varying VTA. It is a wrong-headed design.
If someone has more info on this, I'd be happy to hear it.