Loudspeakers

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic

Reexamination Certificate

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Details

C381S152000, C381S423000, C381S425000, C381S396000, C381S398000, C181S171000, C181S172000, C181S169000

Reexamination Certificate

active

06956957

ABSTRACT:
A loudspeaker drive unit comprising a resonant acoustic radiator, an exciter on the radiator to apply bending wave energy to the radiator to cause it to resonate, a support for the loudspeaker drive unit, and means resiliently coupling the exciter to the support.

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Azima et al., “Electro-Dynamic Exciter”, U.S. Appl. No. 09/355,312, filed Jan. 30, 1998 (as PCT/GB98/00307) including copy of PCT/GB98/00307, IPER and Preliminary Amendment filed with application.

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