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voice coil

noun, Electricity
1.
a moving coil that drives the diaphragm of a sound reproduction system, as a loudspeaker, by the interaction of a changing magnetic field that is produced by a current in the coil and a fixed magnetic field that is produced by permanent magnets.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for voice coil
  • The voice coil valve uses an electrodynamic pilot stage, driven in the same way as an audio speaker.

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