| 摘要 |
PURPOSE:To prevent defective gap and poor external appearance by connecting an end of an edge to near the tip of a sub cone and connecting another end to a frame respectively. CONSTITUTION:A voice coil 12 driven by a magnetic circuit 8 is wound on a voice coil bobbin 14 and connected to a sub cone 15. The sub cone 15 is connected to a plane diaphragm 16 and an end of an edge 18 is connected to near the tip of the sub cone 15 and another end is connected to a frame 17. Accordingly, even after the bobbin 14 is elastically fixed, a gap gauge can be kept attached to prevent defective gap. At the same time, Gap between the end of the diaphragm 16 and frame 17 can be made uniform to prevent poor external appearance. |
