| 摘要 |
The magnetic motor system for driving a loudspeaker voice coil has first and second parts 9, 11 that define a volume or air gap 13 for receiving a voice coil 15. These first and second parts each have a respective permanent magnet 19, 21 with first and second sidewalls 31a, 31b, 33a, 33b that extend in a direction away from the volume 13. The first sidewall is shaped so that it slopes in a direction towards the second sidewall as the sidewalls extend away from the volume. The first and second parts further have respective guide members 39a, 39b, 41a, 41b for channelling lines of magnetic flux in a return path between the permanent magnets 19, 21. The guide members are not permanent magnets. |
