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pallophotophone 11-11-2009 11:18 AM

Zenith FM Cartridge
 
Quote:

Originally Posted by Marlin Mackley (Post 2959615)
Addendum: This thing has 43 tubes on 5 chassis! 2 are on the magnetic cartridge preamp chassis stuffed behind the turntable. I asked my friend where he got it, and it is not the same set as was in Rolla. Still not sure if it was called Mayflower or Marlborough. No mention in the papers that were with it.

One thing about that phonograph. It uses a "Weathers " FM type cartridge. Not magnetic per se. A vane attached to the stylus alters the Q of a coil which is coupled to the external oscillator chassis. The demodulated output of the oscillator is what supplies an audio signal to the amplifier.
You'll drive yourself crazy if you try to test those cartridges in any device that doesn't use that oscillator!
I know as I did until the lights came on about how the thing worked!!
Rebuild the oscillator chassis,and if the styli are still good, it will work pretty well.

Enjoy!!

Pallophoptophone

Marlin Mackley 11-11-2009 12:44 PM

Cool! Thanks for the info, "P".


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