<p>Speakers work with coils of wire and permanent magnets. But, why not use coils of wire for both the permanent magnet as well as the voice coil?</p>

Speakers work with coils of wire and permanent magnets. But, why not use coils of wire for both the permanent magnet as well as the voice coil?

Why don’t speakers use electro magnets?

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Why don’t speakers use electro magnets?

Why don’t speakers use electro magnets?