| 摘要 |
<p>PURPOSE:To obtain a speaker diaphragm having large sound volume and small frequency distortion by using a polyamide resin material that is reinforced with a continuous fiber and/or long-fiber reinforcing material. CONSTITUTION:A speaker diaphragm is made of a polyamide resin material reinforced with a continuous fiber and/or long-fiber reinforcing material. This reinforcing material uses carbon fiber, aramid fiber, glass fiber, alumina fiber, silicon carbide fiber, steel wire, and amorphous metallic fiber and/or mixture of both metallic fibers in a cross mat form. As a result, the performance especially suitable to the speaker diaphragm are secured such as a high internal loss and an excellent specific modules. Thus it is possible to obtain the large sound volume, a small high frequency distortion and flat frequency characteristics, the reduction in sound distortion that ensure faithful reproduction performance at a low temperature part, etc., for the speaker diaphragm.</p> |
