Patent ID: 6188774
Filing Date: 2001-02-13
Classification: H04R

Abstract:
A loudspeaker, whereinan edge is connected at the outer circumferential portion with rim section of a frame fixed to a magnetic circuit; a main diaphragm is connected at the outer circumferential portion with the inner circumferential portion of the edge; a voice coil to be placed in a magnetic gap of the magnetic circuit is connected with the inner circumferential portion of the main diaphragm; a damper disposed at a place inner than the magnetic gap is fixed at the outer circumferential part with a plate of the magnetic circuit; the damper is connected at the central part with the central portion of a sub-diaphragm; and the outer circumferential portion of said sub-diaphragm is connected to the upper surface of the main diaphragm at a place outer than a point where the main diaphragm is connected with the voice coil.