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General Asylum General audio topics that don't fit into specific categories. |
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General Asylum General audio topics that don't fit into specific categories. |
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In Reply to: Like laser turntables posted by Bill the K on July 7, 2014 at 21:22:33:
The ELP laser turntable is still around; see the link below. It never caught on with audiophiles, perhaps because no review ever said that the laser turntable sounded superior to similarly priced traditional turntables. It won't play anything but black records, and those have to be extremely clean. It's possible that the laser turntable just doesn't sound like records played by a needle in the groove. Over 30 years ago, Mitch Cotter investigated the needle / groove interface with an electron microscope. The results of his research were written up in Audio Critic. Cotter discovered that the needle doesn't actually "play" the surface of the groove. The surface of the groove "flows" around the stylus, allowing it to indent into the vinyl. The stylus is therefore pushed around by vinyl slightly under the surface (as I recall the dimensions involves were measured in angstroms). As the stylus passes by the displaced vinyl moves back in place in its wake. Thus, the laser turntable literally doesn't play the same vinyl that a stylus does.
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Follow Ups
- It's still around - Rob Doorack 09:40:03 07/08/14 (4)
- I became aware ... - Bromo33333 14:18:54 07/08/14 (0)
- RE: It's still around - Bill the K 10:14:32 07/08/14 (2)
- RE: Cotter base - Rob Doorack 11:20:07 07/08/14 (1)
- RE: Cotter base - jsusky 12:24:28 08/25/14 (0)
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