Patent ID: 11889258
Assignee: POLK AUDIO, LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. A loudspeaker driver or tweeter diaphragm having a substantially circular diaphragm portion which is connected with or rests upon a voice coil attachment segment, said loudspeaker driver or tweeter diaphragm comprising:
an inner first roll portion having a substantially circular first outer edge and an elliptical, non-circular first inner edge defining a central recessed area having an elliptical major or long axis and a minor or short axis; and
an outer second roll portion having a substantially circular second inner edge and an elliptical, non-circular second outer edge defining an outer area,
wherein the substantially circular first outer edge of the inner first roll portion and the substantially circular second inner edge of the outer second roll portion connect to or rest on the voice coil attachment segment.