Patent ID: 7587060

Claim:
A speaker device, comprising: a vibrating system, comprising two dampers, a voice coil bobbin, a voice coil wound around an outer circumference of the voice coil bobbin with a constant winding width, and a connecting member attached to the voice coil bobbin at a position above the voice coil; a frame configured to support the vibrating system; and a magnetic gap, wherein an upper end of the voice coil is located above an upper end of the magnetic gap, wherein a lower end of the voice coil is located below a lower end of the magnetic gap, wherein a width of the difference between the upper end of the voice coil and the upper end of the magnetic gap is equal or nearly equal to a width of the difference between the lower end of the voice coil and the lower end of the magnetic gap, wherein inner peripheral edge portions of the two dampers are attached to the connecting member at a position between the upper end of the voice coil and the lower end of the voice coil, and wherein outer peripheral edge portions of the two dampers are supported by the frame at a position between the upper end of the voice coil and the lower end of the voice coil.