Equalizable electro-acoustic device used in commercial...

Details Equalizable electro-acoustic device used in commercial... Equalizable electro-acoustic device used in commercial...

2005-11-15

2005-11-15

Nuntz, Curtis (Department: 2643)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Driven diverse static structure

C381S431000

Reexamination Certificate

active

06965679

ABSTRACT:
Electro-acoustic device which when installed in continuous ceiling, partition or wall panels available in the market made of mineral fibre, plasterboard, multi-laminated wood, etc. converts them into flat, invisible radiators of high-fidelity sound by its special characteristic of being equalizable for each type of panel at the time of manufacture and assembly.

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patent: 4675907 (1987-06-01), Itagaki et al.
patent: 5546469 (1996-08-01), Donahoe
patent: 6192136 (2001-02-01), Azima et al.
patent: 6332029 (2001-12-01), Azima et al.
patent: 6618487 (2003-09-01), Azima et al.

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