Patent ID: 8094862

Claim:
A speaker comprising: a frame; a magnetic circuit supported by the frame; a voice coil unit placed movably with respect to magnetic gap provided to the magnetic circuit: a diaphragm of which outer rim is coupled to the frame via a first edge, and of which inner rim is coupled to the voice coil unit; and a damper placed on the magnetic circuit side with respect to the diaphragm, and having an outer rim is coupled to the frame and an inner rim coupled to the voice coil unit, wherein the outer rim of the damper is coupled to the frame via a second edge, which includes a first protrusion protruding toward the diaphragm and second protrusion protruding oppositely to the first protrusion, and wherein the second edge is stiffer than that of the damper, and, wherein a combination formed of the damper and the second edge is stiffer than that of the first edge.