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Audio related items index
Audio related items
calibration strobe disk

Dual calibration strobe disk
These items were often supplied with the purchase of a turntable of the brand, Dual in this case. This one measures 4" in diameter and is only good for 60 hz electrical outlets. Generally, a fluorescent was used to make the strobe be seen better. Later adjustable turntables (with pitches) have a neon light that lights on a strobe design engraved in cast aluminium platters

-Retail: N/A
-Use: Strobe calibration for turntable speeds of 33 1/3, 45, 78 RPM
-Extra informations: Item made of thin cardboard.
-Status: In hand

Added March 1st 2014

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