ACOUSTIC DIAPHRAGM AND SPEAKER

摘要

An acoustic diaphragm capable of reproducing low sound and a speaker using the same are provided to deliver vibration from a voice coil to a standing wave preventing member by installing the standing wave preventing member on a surface of a diaphragm. A diaphragm(5) is made of uniform material. A first direction passes a center of the diaphragm. A first standing wave preventing member(7a, 7b) is arranged on a surface of the diaphragm according to the first direction. A second standing wave preventing member is arranged on a rear surface of the diaphragm. The diaphragm is positioned between the first standing wave preventing member and the second standing wave preventing member. The first standing wave preventing member is faced with the second standing wave preventing member. The second standing wave preventing member is made of material having propagation speed faster than the uniform material.