Patent ID: 7515723

Claim:
A loudspeaker drive unit comprising at least one drive unit comprising a voice coil, a diaphragm, permanent magnet means and pole piece means, the permanent magnet means and pole piece means forming a magnetic circuit with a pole gap arranged to receive and interact with the voice coil, the pole gap providing magnetic field directed radially with respect to a center axis of the loudspeaker, wherein the voice coil, the diaphragm and a support unit forms a voice coil and diaphragm assembly and the voice coil and diaphragm assembly is removable from the magnetic circuit as a separate unit, wherein the voice coil and diaphragm assembly is adapted for high frequency reproduction and the diaphragm is of dome-type, comprising a ring-formed inner suspension, on its outer periphery attached to the dome-shaped diaphragm approximately at the intersection of the dome-shaped diaphragm and the voice coil, and the inner suspension on its inner periphery attached to a center piece of the voice coil and diaphragm assembly.