Patent ID: 8224015
Filing Date: 2012-07-17
Classification: H04R,Y10T

Abstract:
1. A speaker comprising: a magnetic circuit forming a slit-like magnetic gap; a frame that houses and holds the magnetic circuit; a diaphragm attached to the frame so as to be capable of vibrating; a voice coil unit that is placed so as to pass through substantially the center of the magnetic gap, and has its one end coupled to the diaphragm; and a damper attached to the frame to support an other end of the voice coil unit, wherein the voice coil unit has wherein the planar-type coil bobbin section has a plurality of slits; and the voice coil section is disposed so as to weave alternately in and out of the slits from the one side of the coil bobbin section to the other side; and wherein the number of irregularities produced by the voice coil section differs between the one side and the other side of the coil bobbin section.