| 摘要 |
In one embodiment, a loudspeaker system is provided comprising a motor assembly for driving a diaphragm assembly, where the motor assembly includes a pole piece configured to receive an inductance sleeve. The motor assembly also comprises a permanent magnet, a first shorting ring, and a second shorting ring, with the first and second shorting ring being positioned at least partially within an air gap adjacent the pole piece, and with the first ring positioned adjacent a first side of the permanent magnet and the second shorting ring positioned adjacent a second side of the permanent magnet. The permanent magnet preferably is preferably coated with an insulative material, and may also comprise a plurality of arcuate segments.
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