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The author brings a short introduction of new stylus developments and CD4-performance which both have not broken through yet, however, they brought new technologies and shapes for high quality stereo diamond stylii. The technology of production including know-how about material, shank design in accordance with anisotropy and grinding technology are described. Theoretical aspects of tip design in accordance with cantilever design lead to short light weight ultra-hard diamond-boron or even full diamond integrated stylus-cantilevers. The new sound of the Paroc- and Trigon- stylus is described together with an explanation where the difference in sound is coming from.
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 Scott Dorsey |
Comment posted December 20, 2017 @ 16:53:58 UTC
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So, Philips wanted to put a 30KHz subcarrier on the LP in order to carry rear channel surround information with the CD-4 "Quadrophonic" system. This meant the LP had to be redesigned in order to carry information well above 45 KHz and nearly every aspect of the mastering and playback process had to be addressed. This paper addresses the cost-effective design of stylus tips able to track the fine details needed, and the design of cartridge cantelevers light enough to give good tracking without being too delicate. The "Paroc" tip shape here gives good tracking at high frequencies at the expense of performance with worn records. This was some of the last real research on innovative stylus designs before the end of the LP era. (Respond to this comment)
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