| 摘要 |
A Vibration system part (7,8,9,10) for a speaker device (100) includes a woven fabric or a non-woven fabric made of basalt fiber produced by twist yarn or roving yarn being a continuous long-fiber. The vibration system part for the speaker device may be a diaphragm (8), a center cap (10), an edge (9) or a damper (7), for example. In a preferred example, the woven fabric or the non-woven fabric is impregnated with thermosetting resin or thermoplastic resin. Additionally, a lamination member (8b), such as paper, foam material, resin or a film, is preferably laminated (coated) on the woven fabric or the non-woven fabric. Thus, the vibration system parts (7,8,9,10) for the speaker device (100), having excellent acoustic property and reliability, can be obtained at a low price.
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