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Message: <blockquote data-quote="ciaonzo" data-source="post: 8465413" data-attributes="member: 607015">The motor is technically the coil and magnet as a system. Just like any other DC motor (but not AC induction motors), it has permanent magnets that set up a static flux field and then a coil that, when you apply current to it, becomes another magnet (electromagnet). The two repel and attract as the DC current from the amplifier alternates from the positive half of the musical waveform to negative. This moves the cone in and out.Heat will destroy a coil winding but it will also reduce the charge of a neodymium magnet if the temp is too high for too long. I don't believe the same is true for ceramic and cobalt type magnets.</blockquote>

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