| 摘要 |
PURPOSE:To minimize a higher harmonics distortion and to improve a frequency characteristic by strengthening an apex part and peripheral part of a disphragm with the prescribed fiber. CONSTITUTION:The vicinity of an apex of the dome of a diaphragm 1 is strengthened by an alamide fiber, and a vibration attenuating capacity near the apex becomes large. The peripheral part of the dome is formed by the resin strengthened by the light, highly rigid inorganic fiber and the frequency characteristic becomes good. |
