Size Of Hole In Vinyl Record

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Size of hole in vinyl record.

When columbia records introduced the 33 1 3 rpm long playing album in 1948 they kept the hole in the center the same size. As tapes and cds supplanted lps the mechanisms for indicating a cut out changed. Lp spindle hole corrector tool for 33rpm records corrects undersized lp record spindle holes. Vinyl records come in different speeds and sizes do you know what kind you have.

However columbia s archrival rca was most annoyed at this new format. If you haven t run into an lp with an undersized center hole you will and it of course will be when you are entertaining others and you will end up flexing your lp dramatically to try to get it back off of that spindle. The desirable tip radius of the reproducing stylus for stereophonic disc records is 0 5 mils. At first the discs were commonly made from shellac with earlier records having a fine abrasive.

The groove usually starts near the periphery and ends near the center of the disc. The reproducing stylus motion shall be tangent to or lie in a plane which passes through the record center and which is inclined at a nominal angle of 15 degrees clockwise to a normal to the record at the stylus tip as viewed from the record c.