| 摘要 |
PROBLEM TO BE SOLVED: To provide a speaker reproducing a signal with up to a required frequency band in a high frequency limit frequency of the sub-cone in the speaker having a diaphragm and a sub-cone. SOLUTION: The speaker comprises: a magnetic circuit 8 with a magnetic gap 9; a sub-cone integrated bobbin 11 having at its one end a voice coil 10 located to the magnetic gap 9; the diaphragm 12 coupled to an outer part of the magnetic gap 9 of the sub-cone integrated bobbin 11; and a sub-cone part 14 configured by extending the other end of the sub-cone integrated bobbin 11. Since the speaker employs the sub-cone integrated bobbin 11, no adhesion joining is required, the vibration transmission loss from the voice coil to the sub-cone part is reduced, and the speaker reproduces a signal having up to the required high frequency band. COPYRIGHT: (C)2005,JPO&NCIPI
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