STP distance. Is it critical ?

Dear Bill, Not so sure if the math. is so sure (see fundations). Enyway the math is not subjective. But we all
are trying to get the stylus on those null points. But if
we use,say,SME V with holes and not slots how are we (pre)
supposed to get there without changing the SPD? Ie I assume that eff.lenght is pivot- stylus distance.

Regards,

Hi Raul,

I think the point you were trying to make earlier that a designer didn't need to consider the spindle-to-pivot distance was what caught my eye. If you intended to mean otherwise, then we are in agreement. All pivoted arms have some degree of tracking error. It's just the nature of the beast.

Wouldn't it be nice if all tonearms were linear tracking to match the cutting process?

Bill

Nandric,

That's a good point regarding the SME V.

It would be nice to get some insight on the geometry model from the SME designer(s).

Bill

Dear Bill, J. Carr proposed 'éasy way' out for the SME V:
recalculate the geometry (thread reg. SME V?).
My (other) question. According to SAEC engeneers the balance in all 3 dimensions across the radius is of much
importance. Can you explain this claim?

Regards,

Dear Nandric: ++++ " But we all
are trying to get the stylus on those null points. But if
we use,say,SME V with holes and ...." +++++

I can't understand what you exactly men with the V.

SME V was designed with Baerwald geometry, its null point are right " there " .

If your tonearm is mounted with the precise STP distance then you have not any single problem to achieve the SME null point.

Please let me know what I'm missing here.

regards and enjoy the music,
Raul.