| 摘要 |
PURPOSE:To reduce the resonance at high frequencies for front and rear member and to make a diaphragm itself light, by providing a notch to one of front and rear member and taking the notch as a core member through cutting up the notch, in a flat type speaker duaphragm. CONSTITUTION:A rear member 2 is provided with a lot of clamp type notches 5 and the notches 5 are folded up vertically to form a core member. Since the length of a fin 5 is taken as 4 times the height (thickness of a diaphragm) or below, a lot of fins can be provided and the resonance of front and rear members 1, 2 can be moved to high frequencies. |
