| 摘要 |
A loudspeaker is provided including a diaphragm having a lower end formed with an inner surface mounted to the voice coil former, an outer surface spaced from the inner surface and a number of circumferentially-spaced vent bores formed between the inner and outer surfaces which vent a dust cap cavity. Alternatively, the lower end of the diaphragm is mounted to the outer surface of the voice coil in position so that a deflector formed in such lower end is located in the path of a flow of air entering and leaving the dust cap cavity through vent bores formed in the voice coil former to direct such air flow over the wire winding of the voice coil and obtain at least some cooling thereof in addition to venting the dust cap cavity.
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