33’s

In 1948, Columbia introduced the 33 1/3 rpm long-playing microgroove record.  While early 33’s have a 10-inch diameter, most 33’s are 12-inches.  This format plays at a much slower speed than 78’s.  This allows for longer playing (LP) times; around 20 minutes a side.  33’s are also more durable than the brittle 78’s.  33’s remain popular with many and are still being pressed today.

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