| 摘要 |
PROBLEM TO BE SOLVED: To provide a speaker apparatus capable of providing stable characteristic even in the case of high input. SOLUTION: An insulating layer is coated and formed by coating processing of a ceramic composition or a heat resistant resin composition and a conductive wire having a fusing layer on the surface is wound, thereby winding and forming a voice coil 520 on one end side outer circumferential surface of a coil bobbin 510 formed of a titanium alloy into a cylinder. With this configuration, the conductive wire never short-circuits, and even if a large collapsing force or a large bending force is applied to a border between a position where the voice coil 520 is wound and a position where the voice coil 520 is not wound when it moves at a high speed in a long distance due to the high input, the coil bobbin 510 is not broken and the stable characteristic can be provided. COPYRIGHT: (C)2006,JPO&NCIPI
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