
Originally Posted by
PeterA
If azimuth adjustability is critical, then the SME 312S has both the advantage of the 12" length and the removable headshell for both easy cartridge swapping and azimuth adjustability.
I don't understand why alignment is more critical with a longer arm, but let's assume that is the case. I agree that Bob's jig, or any other properly designed protractor would solve the problem. It seems to me that the shorter arm with a more pronounced curve to the tracing arc would exasperate the problem of a poorly aligned cartridge, especially in the zenith direction, if the stylus is a line-contact type. Not so much if it is a conical stylus.
Also, I believe, if anti skate and VTA are slightly off, the longer the arm, the less a slight error matters. There is less skating force with a longer arm, if all else is the same and also different LP thicknesses effect VTA/SRA less with a longer arm.
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