Absolutely, Douglas is correct. 78's were designed for equipment contemporary of their time of manufacture, and the curve only works forward. Play a 1920's 78 on a 1950's machine all you like, but never play a 1950's 78 on a 1920's phonograph!
----- Original Message ----- From: "Douglas Houston" <[email protected]> To: "Antique Phonograph List" <[email protected]> Sent: Wednesday, February 13, 2008 10:06 PM Subject: RE: [Phono-L] open question > After WW II, the record companies did go to pressing discs with plastics, > and I believe that Vinyl was the biggest player. Light weight pickups were > widely in use, and played the discs very well. But, a heavy pickup, such > as > early horseshoe magnetics, or even acoustic sound boxes will make a mess > of > them. > > >> [Original Message] >> From: Thatcher Graham <[email protected]> >> To: Antique Phonograph List <[email protected]> >> Date: 2/13/2008 10:28:15 PM >> Subject: [Phono-L] open question >> >> >> I have a number of 78s that are not shellac or at least do not appear to >> be. In many cases (depending on brand) their labels indicate they are >> made of Metrolite I've read that Mercury used "Merco Plastic" MGM used >> Mercolite and Savoy used Sav-o-Flex. >> >> Do these have the same resilience as my shellac 78s? I am concerned >> that normal play will wear them more quickly. If they are made of a a >> PVC/ENR blend that is probably the case. >> >> -- Thatcher >> >> >> >> >> Metrolite, Merco Plastic, and Sav-o-flex! >> > >> > >> > >> > _______________________________________________ >> > Phono-L mailing list >> > http://phono-l.oldcrank.org >> >> >> _______________________________________________ >> Phono-L mailing list >> http://phono-l.oldcrank.org > > > > _______________________________________________ > Phono-L mailing list > http://phono-l.oldcrank.org >
