Patent ID: 6141430
Filing Date: 2000-10-31
Classification: H04R

Abstract:
An electroacoustic transducer comprising:a diaphragm;a support member for supporting said diaphragm;a pole piece placed inside said support member and comprising a core and a base;a coil positioned around said core; anda magnet placed between said support member and said coil, wherein:said diaphragm is made of resin, and a layer of magnetic material is provided on an outer surface of said diaphragm and/or the resin of the diaphragm and the magnetic material are mixed together, wherein said diaphragm having the layer of magnetic material on the outer surface and/or the resin mixed with the magnetic material is magnetized by said magnet; andwherein said diaphragm includes a centrally located added mass member made of resin.