Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site tymix.UUCP Path: utzoo!linus!decvax!tektronix!hplabs!oliveb!tymix!figmo From: figmo@tymix.UUCP (Lynn Gold) Newsgroups: net.audio Subject: Speeds of turntables - why they exist Message-ID: <288@tymix.UUCP> Date: Tue, 2-Oct-84 19:24:32 EDT Article-I.D.: tymix.288 Posted: Tue Oct 2 19:24:32 1984 Date-Received: Thu, 4-Oct-84 05:59:38 EDT References:, <1323@sdcrdcf.UUCP> <287@tymix.UUCP>, <360@crystal.UUCP> Organization: Tymshare Inc., Cupertino CA Lines: 19 78: Given the technology at the time, the best fidelity they could get and still be practical was 78. Radio broadcasts were often recorded on 16" transcription disks at this speed. Because the sound quality was so much better on the outside of the disk than on the inside, the first disk would go from the outside to the inside, the second from the inside to the outside, etc., until the program was finished, so it would not be as obvious when they switched records (you wouldn't hear a sudden change in the sound quality of the broadcast). 45: These were designed to be portable. The reason for the wide hole in the middle has something to do with physics and acoustics, if I'm not mistaken. 33: These were designed to be able to hold more music at a reasonably tolerable rate (in terms of sound quality). 33s do lose in many ways compared to the old 78s (you lose a lot of highs). --Lynn