Patent ID: 6222931
Filing Date: 2001-04-24
Classification: H04R

Abstract:
A diaphragm electric-acoustic transducer, of the movable-coil electrodynamic type, comprising a transducer single piece diaphragm made of a high heat conductivity metal material and having a thickness from 0.04 to 0.07 mm, said diaphragm being directly connected to a metal mass forming a support unit and resiliently suspended on and coupled to said supporting unit, said diaphragm including a corrugated portion providing a resilient suspension system, said diaphragm also including a peripheral ring portion engaged under a top flat portion of said supporting unit and a central region forming a cylindrical portion, said cylindrical portion supporting a movable electrically conductive coil which closely contacts said high heat conductivity metal material of said diaphragm so that, as said transducer is operated, said coil transmits to said diaphragm heat generated by an acoustical current passing through said coil to quickly and efficiently dissipate said heat by irradiation and conduction through said metal mass;a rubber damper element adapted to dampen said diaphragm to change a residence characteristic of said transducer.