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Technics SL-1200 Alignment

Hi Anthony,

> By focussing on the calculated linear offset, it should also be obvious now why Technics and Jelco do NOT use the (so-called)
> Stevenson alignment even when you fiddle Rmax for Inner null = 58.8 to try and get the overhang and offset.

Here is a graph of the Technics SL-1200 alignment. The linear offset is 86.160-mm. This is the average of the two alignment null-point radii, which are 58.80-mm and 113.52-mm. You are correct that this is not Stevenson's alignment for the commonly accepted IEC modulated groove envelope in-between 60.325-mm and 146.05-mm. It can only be Stevenson's alignment if you define the modulated groove envelope to be within 58.8-mm and 140.62-mm. It could also be Lofgren A if you define the modulated groove envelope in-between 53.464-mm and 140.62-mm.


.

I don't understand what you mean by focusing on the linear offset. The determining factor as to whether the Technics alignment is Stevenson's would be the modulated groove envelope.

Best regards,
John Elison

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