i picked up 37 original nuphonic brown wax blanks on ebay for $ 37.00 !!! a buck each. these are the highest quality recording blanks i have used, they are chocolate brown in color, very low background noise and make bright crisp recordings even as slow speed. this is recorded at 100 rpm and is a mp3 transfer from the audio of a you tube video playing on my ipad, even at this speed this sounds as good as a portable cassette tape recorder, considering this is a spring powered acoustic phonograph the results are impressive. the blanks were made circa 1920 and were originally dictation cylinders. i have shortened them to 4.3" which fills the mandrel to the end and shaved them to a diameter of 2.180 " an optimum size for the cylinder phonograph. these cylinders are not seen very ofter and i will be using them to record high quality copies of original period recordings. this is just a test of the capability of the blanks.
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THEVICTROLAGUY
- Posts: 321
- Joined: Thu Feb 28, 2013 3:55 pm