The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 04, 2012
Filed:
Jan. 15, 2007
Douglas J. Button, Simi Valley, CA (US);
Bernard M. Werner, Los Angeles, CA (US);
Ernest Bird, Osceola, IN (US);
Alexander Victor Salvatti, Canoga Park, CA (US);
Jerry Moro, Moorpark, CA (US);
Douglas J. Button, Simi Valley, CA (US);
Bernard M. Werner, Los Angeles, CA (US);
Ernest Bird, Osceola, IN (US);
Alexander Victor Salvatti, Canoga Park, CA (US);
Jerry Moro, Moorpark, CA (US);
Harman International Industries, Incorporated, Northridge, CA (US);
Abstract
A dual-coil, dual magnetic gap electromagnetic transducer is provided where each voice coil is wired to include separate leads so that each individual voice coil may be driven by a separate amplifier or by a separate bridged amplifier. Signal processing may further be utilized to increase the output of the loudspeaker, to achieve extreme excursion without extreme distortion and to provide for alternative voice coil designs to address common problems with dual-coil, dual magnetic gap transducers, including, but not limited to, heat generation.