Appendix: Record Players
Record players are obsolete technology, but it is felt that information should remain in the literature describing how to get the best out of the format, not least because inadequate or inept setting up of equipment can cause permanent damage to records, and because it seems likely that the LP will persist for some time yet. Also, there is still valuable material to be found here which is not always available on CD.
PICKUP MECHANICS
The replay stylus motion should describe an arc offset from the vertical by 20°, as shown in Figure A1.1. This will be achieved if the arm height at the pivot is adjusted such that the arm tube is parallel to the surface of the record when the stylus is resting in the groove. The stylus tip ...
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