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Audio and Video Talk
Vinyl
Turntable power supply - Thorens TD150 MkII
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<blockquote data-quote="croak" data-source="post: 71424" data-attributes="member: 361"><p>"Or. Does it not make a difference as both motors turn at the same speed? So how the platter is 'geared' does'nt make a difference..."</p><p></p><p>You almost got it, both pulleys are geared to turn their platters corectly when fed a 50hz ac voltage.</p><p>The thorens driven platter size is close to that of the linn but that is not the point.</p><p>The thorens motor has fewer poles and turns faster and as a result is made with a smaller pulley, the ratio between the Linn pulley size and the Thorens pulley size is again in ratio to the number of poles on the motors. The math is actually quite complex on pulley size as you need to factor in a wee slip.</p></blockquote><p></p>
[QUOTE="croak, post: 71424, member: 361"] "Or. Does it not make a difference as both motors turn at the same speed? So how the platter is 'geared' does'nt make a difference..." You almost got it, both pulleys are geared to turn their platters corectly when fed a 50hz ac voltage. The thorens driven platter size is close to that of the linn but that is not the point. The thorens motor has fewer poles and turns faster and as a result is made with a smaller pulley, the ratio between the Linn pulley size and the Thorens pulley size is again in ratio to the number of poles on the motors. The math is actually quite complex on pulley size as you need to factor in a wee slip. [/QUOTE]
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Audio and Video Talk
Vinyl
Turntable power supply - Thorens TD150 MkII
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