Music Lane

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Re: what simple physics is that?

Posted by High-end Dreamer on July 13, 2001 at 18:02:33:
No need for me to email; I've spoken to Stan a number of times in the past re: half-speed mastering, playback speeds, groove modulations, etc., and he has never indicated anything like what you're talking about.
**It is simple physics why 45 rpm pressings are not as good as 33 1/3. The slower the playback, the more acurately a stylus can read the info in the grooves, which are more evenly spread out. The faster you go, more distortion, especially in the higher frequencies, also more mis-tracking.**
Quite the contrary--it is simple physics why 45 rpm pressings allow a stylus to read the groove BETTER, since the modulations are spread over a longer distance. (With a 33rpm disc, modulations are more tightly packed, so that particularly with the inner grooves, very high frequencies cannot even be resolved by most stylus/carts, resulting in significant distortion.) Downsides are slightly higher surface noise and less playing time per side.