The Talking Machine Forum — For All Antique Phonographs & Recordings

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 Post subject: Diaphragm thicknesses as a reference
PostPosted: Mon Feb 06, 2017 8:56 am 
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Victor III
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I'm Getting Ready for my Mother In Law
Joined: Sat Feb 28, 2009 1:52 pm
Posts: 643
Location: the Adirondacks
This is an ongoing project for me, but for now here are the current thicknesses measured from original diaphragms. I think it could be a wonderful thing if we can all contribute to this list and make a loose reference. For example, what are the thicknesses for a Columbia Graphophone BC? Or any of the Pathé cylinder machines? Diaphragm thickness is important!

Victrola #2 & Exhibition .006"
Victrola #4 .009"
Edison 2 minute recorder .0025" - .003"
Edison 3-stage .004" - .007" each
Edison Standard Speaker & Automatic .005" GLASS
Columbia Graphophone Lyric 2-stage .002" + .002"
Ediphone recorder .006"
-Antique Phonograph Reproducer Restorer-
http://www.EdisonDiamondDisc.com
Taming Orthophonics Daily!


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