Patent ID: 8879774

Claim:
A loudspeaker magnet assembly for a loudspeaker transducer having a voice coil, surround suspension member, and diaphragm, the loudspeaker magnet assembly comprising: a first magnet assembly, wherein the first magnet assembly includes an annular outer magnet having an outer diameter and an inner diameter and wherein the inner diameter defines a vacant circular center within the annular outer magnet, a circular inner magnet having a diameter less than the inner diameter of the annular outer magnet, wherein the circular inner magnet is positioned concentrically within the vacant circular center of the annular outer magnet, and wherein the difference in length between the diameter of the circular inner magnet and the inner diameter of annular outer magnet define an annular first magnet assembly air gap; a top plate positioned below the first magnet assembly, the top plate including an annular outer top plate having an outer diameter and an inner diameter and wherein the inner diameter defines a vacant circular center within the annular outer top plate, a circular inner top plate having a diameter less than the inner diameter of the annular outer top plate, wherein the circular inner top plate is positioned concentrically within the vacant circular center of the annular outer top plate, and wherein the difference in length between the diameter of the circular inner top plate and the inner diameter of annular outer top plate define an annular top plate air gap; a second magnet assembly positioned below the top plate, the second magnet assembly including an annular outer magnet having an outer diameter and an inner diameter and wherein the inner diameter defines a vacant circular center within the annular outer magnet, a circular inner magnet having a diameter less than the inner diameter of the annular outer magnet, wherein the circular inner magnet of the second magnet assembly is positioned concentrically within the vacant circular center of the annular outer magnet of the second magnet assembly, and wherein the difference in length between the diameter of the circular inner magnet and the inner diameter of annular outer magnet of the second magnet assembly define an annular second magnet assembly air gap; and a bottom plate positioned below the second magnet assembly, wherein the diameter of the circular inner magnet of the first magnet assembly coincides with the diameters of the circular inner top plate and the circular inner magnet of the second magnet assembly, such that the first magnet assembly air gap, the top plate air gap, and the second magnet assembly air gap are aligned and define a magnetic air gap, wherein the magnetic air gap is configured to receive the voice coil, and wherein the annular outer magnet of the first magnet assembly includes at least one channel configured to pass a hookup wire from the voice coil outwards from the first magnet assembly.