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How do speakers work?


Griulf
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The speaker got two magnets, one needs electricity and one does not.

The voice coil is attached to a diaphragm(cone).

When the electromagnets electricity changes direction, the voice coil moves back and forth.

The diaphragm creates sound waves when moving back and forth.

Is this correct?

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Yeah, pretty much. The coil is more strongly magnetic as you pass more current through it (and therefore drop more voltage across it) so it makes the diaphragm move more, so it'll convert an electrical waveform signal to an identical sound wave. If the electrical voltage goes negative the coil will move in the other direction as well but I think you've got the gist of it.

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