Speaker grille assembly

Details Speaker grille assembly Speaker grille assembly

1988-12-02

1989-12-19

Fuller, B. R.

Acoustics

Diaphragm and enclosure

Recessed

181175, H05K 500

Patent

active

048876909

ABSTRACT:
A speaker grille assembly (800) includes a speaker grille 410), a felt (200), and a speaker (300). The speaker grille has a front surface (420), and a rear surface (430). The speaker grille (410) has plurality of equally spaced channels (440) for passage of sound. The sound channels (440) are formed such that that the rear surface port (422) is substantially larger than front surface port (411) thereby enhancing acoustic power transfer by increasing the effective sound passage space.
The sound channels (440) can be formed such that the passage through the grille (410) are provided with either gradual or sudden transition from front port (411) to the rear port (422) resulting in a larger rear surface apertures.

REFERENCES:
patent: 3909530 (1975-09-01), Gosswiller
patent: 3938618 (1976-02-01), Ambruoso, Sr.
patent: 3989909 (1976-11-01), Hodsdon et al.
patent: 4196791 (1980-04-01), Gottlieb

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