Loudspeakers (HT ONLY)

A loudspeaker or pair of headphones generates sound waves using the motor effect where an alternating current flows through a coil in a magnetic field, causing the coil and magnet to experience a force.
The coil pulls on a cone, which generates vibrations in the air as a sound wave.
Variations in the frequency and size of the current change the motion of the cone, creating different sound waves.

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