Tone Arm

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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Tone Arm

 

a component of the sound pickup that holds the pickup head and makes possible movement of the head from the edge of a phonograph record to its center.

A tone arm is usually a hollow metal rod. The pickup head is mounted on one end of the rod; the other end is equipped with a stalk that is used to rotate the tone arm in the vertical and horizontal planes and a counterweight that is used to adjust the pressure exerted by the pickup on the record groove. A special device ensures the smooth lowering of the pickup head onto the record.

REFERENCE

Apollonova, L. P., and N. D. Shumova. Gramzapis’ i ee vosproizvedenie. Moscow, 1973.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
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