Patent ID: 8005253

Claim:
A speaker comprising: a frame; a magnetic circuit supported by the frame; a voice coil body disposed movably against a magnetic gap in the magnetic circuit; a diaphragm having an outer rim connected to the frame via a first edge and an inner rim connected to the voice coil body; and a damper disposed closer to the magnetic circuit than the diaphragm, the damper having an inner rim connected to the voice coil body, wherein: the damper has an outer rim connected to the frame via a second edge, the second edge has a protruding portion protruding toward the diaphragm or the opposite side thereof, the damper has such a structure that a first protrusion protruding toward the diaphragm and a second protrusion protruding in a direction opposite to the first protrusion are alternately repeated in a plurality of times, the first protrusion and the second protrusion are different in size, and the smaller protrusion out of the first and second protrusions protrudes in a same protruding direction as that of the second edge.