Invention Grant
- Patent Title: Multiple magnet loudspeaker
- Patent Title (中): 多磁体扬声器
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Application No.: US11940019Application Date: 2007-11-14
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Publication No.: US08135162B2Publication Date: 2012-03-13
- Inventor: Andrew Holt , Douglas K. Hogue , Michael A. Canada, Sr.
- Applicant: Andrew Holt , Douglas K. Hogue , Michael A. Canada, Sr.
- Applicant Address: US CA Northridge
- Assignee: Harman International Industries, Incorporated
- Current Assignee: Harman International Industries, Incorporated
- Current Assignee Address: US CA Northridge
- Main IPC: H04R1/00
- IPC: H04R1/00 ; H04R9/06 ; H04R11/02

Abstract:
A loudspeaker provides increased magnetic flux from multiple magnets to drive voice coils to generate sound. The loudspeaker is formed as a smaller profile and reduced weight package. The loudspeaker includes a dual pole, first and second magnets, first and second front plates, and first and second gaps. The polarities of the first and second magnets are aligned in the same direction. The first and second magnets may be disk or ring-shaped and may be coupled to a flange of the dual pole. The first and second gaps may be formed between the inner diameters of the first and second magnets and the dual pole. The magnetic flux produced by the first and second magnets may be combined, directed, and concentrated within the first and second gaps by the dual pole and the front plates. At least portions of a first and a second voice coil may be positioned within the first and second gaps, respectively, and diaphragms may be coupled to the first and second voice coils.
Public/Granted literature
- US20090123005A1 MULTIPLE MAGNET LOUDSPEAKER Public/Granted day:2009-05-14
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