Diaphragm thicknesses as a reference
Posted: Mon Feb 06, 2017 7:56 am
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"
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"