| 摘要 |
PURPOSE:To specify the center position of a center speaker unit and those before and behind it, and also to prevent acoustic characteristics from deteriorating, by supporting a frame part by fixing several leg parts in the magnetic circuit of a plane-diaphragm type speaker unit. CONSTITUTION:Several leg parts 18 are fixed to pole 9 inside of magnetic circuit 6 of plane-diaphragm type speaker unit 2 and frame part 17 is supported by leg parts 18. Then, inside edge 5b of unit 2 is bonded to frame part 17. Consequently, the center position of speaker unit 12 is determined. In addition, unit 12 is locked by lock step surface 19 of leg part 18, thereby specifying the forward and backward positions of unit 12. As a result, characteristic deterioration can be prevented. |
