Audio Restoration of Edison Diamond Discs and Historical
2013-9-20 · Edison Diamond Disc Re-Creations play at 80 rpm's (not the standard 78 rpms of the day). To overcome this problem, I used a Technics SL-1200MK2 record player. It has the ability to dial in the exact rpm's, as well as the ability to adjust to the thickness of each record (or disc height). Normal records are approximately 1 mm thick, however ...
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