Patent ID: 8582799

Claim:
A speaker device comprising: a magnet; an outer yoke; an inner yoke forming a magnetic circuit with said magnet and said outer yoke so as to form a magnetic gap between said outer yoke and said inner yoke, such that a magnetic flux generated from said magnet cuts across the gap; a diaphragm; a voice coil unit linked to said diaphragm, disposed within said magnetic gap; and at least one positioning member assembled with said inner yoke and said outer yoke to determine the positions with respect to one another of said inner yoke and said outer yoke, which link magnetically to said magnet; wherein said at least one positioning member comprises a spacer unit, an inner surface of said spacer unit contacting said inner yoke and an outer surface of said spacer unit contacting said outer yoke to define said magnetic gap; wherein said voice coil unit further comprising: a voice coil portion formed on the surface of a flexible material in a voice coil array pattern; and a supporting unit that is formed following said voice coil portion of said flexible material, and elastically supports the voice coil portion; wherein said supporting unit is fixed to said positioning member so that said voice coil portion is disposed within said magnetic gap.