Patent ID: 7062061

Claim:
A speaker apparatus comprising: a magnetic circuit having a magnetic gap; a magnet for generating a magnetic field to be applied to the magnetic circuit; a cylindrical coil bobbin arranged within the magnetic gap; a voice coil attached to the coil bobbin; and a diaphragm coupled with the one end of the coil bobbin and being oscillatable in an axial direction of the coil bobbin, wherein the voice coil includes a winding portion where a conductive wire is wound in a circumferential direction on the periphery of the coil bobbin, lead portions where the conductive wire at each of both ends of the winding portion is extracted along a bus line of the outer peripheral surface of the coil bobbin, and supplemental portions added to the lead portions, and the supplemental portions each has a shape, which can be deformed and restored repeatedly in response to stress, applied to the lead portions when the diaphragm oscillates.