What could xotoxi's avatar be?

elvis

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Sep 15, 2008
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if not one of those things we used to put in the middle of 45s to keep them centered on the turntable.
 
Why did they put such a big hole in the 45s? They didn't do that for the 78's

Good question. Got me wondering. It was kind of a VHS vs Beta thing, only between RCA and Columbia.

Found this:

In presenting the 45, RCA unloaded some drivel about how 45 RPM was the optimum speed for sound reproduction. But it was revealed that in fact RCA had told its engineers to come up with any old speed so long as it wasn't compatible with Columbia's system.

The big hole was apparently supposed to make the two types of records even more incompatible.


The Straight Dope: Why are record speeds 33, 45, and 78 RPM? And why the big hole in 45s?
 
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