Patent ID: 6088466
Filing Date: 2000-07-11
Classification: H04R

Abstract:
A loudspeaker, comprising:a flame, a voice coil including a former carrying a wire winding, a diaphragm and a lower suspension;a motor structure including a top plate, a back plate, a magnet connected between said top plate and back plate, and a pole piece concentrically disposed within a bore formed by said top plate and said magnet defining a magnetic gap therebetween, said top plate being formed with a leg extending vertically upwardly from said magnet and spaced from said pole piece;an adaptor ring including a wall having a first end, a second end, an inner surface defining a hollow interior and an outer surface spaced from said inner surface;said former of said voice coil being received within said hollow interior of said wall of said adaptor ring and being connected to said inner surface of said wall, said diaphragm and said lower suspension being connected between said frame and outer surface of said wall;said wall of said adaptor ring being formed with at least one passage located in between said inner surface and said outer surface thereof for venting air.