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Path: utzoo!decvax!microsof!uw-beaver!tektronix!tekmdp!michaelk
From: michaelk@tekmdp.UUCP
Newsgroups: net.audio
Subject: Re: linear tracking turntable inquiry
Message-ID: <1993@tekmdp.UUCP>
Date: Tue, 31-May-83 11:10:28 EDT
Article-I.D.: tekmdp.1993
Posted: Tue May 31 11:10:28 1983
Date-Received: Wed, 8-Jun-83 09:16:27 EDT
References: tesla.81
Lines: 16

The Sony PSX-800 linear tracking turntable is uP based.  It has a base
horizontal speed for stylus, then when there is a tracking error detected,
it does a correction.  So far, things are normal, but then, (according
to literature) it *corrects* the horizontal speed to match the record! So
for most of the record (other than the first few "learning" tracks) it is
nominally more or less tracking the groove center rather than being dragged
across as in normal tonearms.  Of course, even at the correction point, the
arm is close to tangential anyway. This turntable also has the Biotracer type
mechanism that gives an effective arm mass of zero in both x and y directions.
I'd agree that a CD player would be a better choice of purchase though,my
Sony PSX-800 went for about $550-600 mail order from a discount place (plus
another $125 for the cartridge)

Mike Kersenbrock
Tektronix Microcomputer Development Products
Aloha, Oregon