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1. Moving-coil loudspeakers
Moving-coil loudspeakers are electrodynamic transducers operating as transmitters.
They are by far the market leader in sound reproduction systems. This almost exclusive choice is mainly due to the fact that they are the only transducers capable of reproducing low frequencies at power levels compatible with a balanced rendering of the entire audible spectrum.
1.1 Operating principle
A free coil made up of N turns of length L placed in the air gap of a radially symmetrical permanent magnet is subjected to a force perpendicular to the field lines when a current i flows through it (figure 1...
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