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- Path: sparky!uunet!news.larc.nasa.gov!grissom.larc.nasa.gov!kludge
- From: kludge@grissom.larc.nasa.gov (Scott Dorsey)
- Newsgroups: sci.electronics
- Subject: Re: New (to me) laser-beam pickup application
- Date: 3 Jan 1993 22:20:46 GMT
- Organization: NASA Langley Research Center and Reptile Farm
- Lines: 26
- Message-ID: <1i7oruINNd3r@rave.larc.nasa.gov>
- References: <1992Dec30.065648.29072@ole.cdac.com> <72811@cup.portal.com>
- NNTP-Posting-Host: grissom.larc.nasa.gov
-
- In article <72811@cup.portal.com> Chris_F_Chiesa@cup.portal.com writes:
- >By now we all (hopefully) know that lasers are used to read signals from
- >CDs and videodiscs, but last weekend while visiting friends over Christmas
- >I heard of a new application for the same (or similar) technology: reading
- >good ol' vinyl records by contactless laser pickup. Has anyone here heard
- >of this, and can anyone provide any details on HOW it is being done? This
- >is one of those ideas that, to me, seems obvious in retrospect, and "it's
- >a wonder nobody thought of it sooner."
-
- You are thinking of the Finial laser turntable. It was really a bad idea,
- since any little imperfection in the groove wall would show up as a tick
- or a pop. While it did do a very good job of playing back records in
- good shape, it would bring out a lot more surface noise than conventional
- playback, and it had great difficulties tracking warped recordings, or
- records with an off-center hole. Finial sold about twenty of the machines
- at $15,000 each, before going bankrupt.
-
- There is a small Japanese company which has taken over the design, and is
- making the laser turntables on a one-off basis for archivists. They are
- significantly more than $15,000, and except for being able to salvage certain
- types of damage, they don't do half as good a job as a conventional pickup.
-
- Save your money and buy a Benz-Micro cartridge and an SME arm instead.
- That'll put you back a few thousand bucks less and you might even have
- enough left over for a nice turntable.
- --scott
-