So in other words; Don't get yer ******* in an uproar over minuscule amounts, Just judge it by ear?
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It can be done -- but is a PiTA and also can be next to impossible depending on your stylus profile
My detailed methodology is presented here
Since then however I've moved on to two alternative options
1) Simply measure directly using a tool like this -- then fine tune by ear
2) Or (best) use the AnalogMagik software and take the guesswork out -- but it will cost you!
The idea of measuring SRA using a digital microscope seems to be about as current as last year‘s high fashion. In recent weeks or months, there have been a few convincing posts by knowledgeable persons in the field suggesting that most of us would not know how to use the microscope to determine the true rake angle of the stylus, because it requires an intimate understanding of the geometry of the stylus tip you are dealing with. And modern styli are very complex in shape.It's not just the stylus shape that makes it difficult. The reality is that it takes a big change at the pivot-end to make an audible difference at the stylus end. I had VTA on-the-fly 30 years ago, I wanted that magic 'snap into focus' moment. But it took very large adjustments to hear any meaningful change. It was a VDH 1 stylus, with a very sharp edge — it should have been dramatic. I was so disappointed.
This puts it in perspective...
Joe, Sorry to be such a nihilist, but yes, judge by ear. While I agree with bimasta that it takes a big change in VTA to make much of a measurable change in SRA, I also observe that small changes in VTA, done by ear, have a subtle but satisfying effect on tonal balance, whether or not I am doing much to SRA.
I have never tried using a digital scope myself. I read comments by a couple of manufacturers of cartridges that there are problems with this approach. For one thing, when the record is actually being played, the angle changes so the static measurement will be different from the supposedly correct angle during play.
It makes more sense to start with a rough setting (the easier to accomplish setting of the tonearm/cartridge top parallel to the record surface, and then make small changes based on sonic preference.
- 17 posts total