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Post by electronumpty on Jan 7, 2021 22:38:07 GMT
Found a couple of good videos and notes on stylus shapes by Soundsmith's Peter Lederman, interesting to me anyhoos.  Stylus shapes explained |
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Post by macca on Jan 9, 2021 9:38:29 GMT
This bit was interesting, always found myself that claims of 2000 hours of stylus life were nonsense, I could always hear some degradation after a couple of hundred.
Wear, Tear and Life
So we know that the more extreme line contacts reduce wear.... but what is the difference?
Apparently according to Jico (manufacturer of the highly regarded SAS stylus), the amount of playing time where a stylus will maintain its specified level of distortion at 15kHz is as follows:
Spherical / Conical - 150hrs
Elliptical - 250hrs
Shibata/Line contact - 400hrs
SAS/MicroRidge - 500hrs
This is not to say that at 500 hrs a SAS stylus is "worn out" - but at that stage the wear has reached the point where distortion at 15kHz surpasses the level specified by Jico for a new stylus. (Which I believe is 3%).
Some manufacturers have traditionally defined a stylus as being "worn out" when it starts to damage the record... in these terms the figures provided by Jico can at least be doubled, and in some cases quadrupled.
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Post by robbiegong on Jan 9, 2021 17:12:33 GMT
Found a couple of good videos and notes on stylus shapes by Soundsmith's Peter Lederman, interesting to me anyhoos. Stylus shapes explained  Yep, Stylus profiles/shapes interesting to me too. Plays a critical part does your 'recorded information in the grooves extractor', so knowing as much as you can about it is only going to be of big benefit. Odd that so many 'audiophiles' don't actually look to inform themselves, at least a bit about the stylus profile they've chosen  |
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Yep, Stylus profiles/shapes interesting to me too. 