Speaker system and the same for television sets

Details Speaker system and the same for television sets Speaker system and the same for television sets

1996-07-24

1997-10-07

Dang, Khanh

Acoustics

Diaphragm and enclosure

With horn

181155, 181156, 181141, H05K 500

Patent

active

056751311

ABSTRACT:
As the front surface diaphragm of the speaker is provided with a first acoustic waveguide and the rear surface diaphragm is provided with a back cavity reflecting sound waves and a second acoustic waveguide guiding the reflected sound waves, a mass of air by the first acoustic waveguide will be applied to the front surface diaphragm, substantially the same load as to the rear surface diaphragm, the acoustic loads in the front and rear of the diaphragm will be balanced, the sound waves of the low frequency ranges will be able to be efficiently discharged on substantially the same level from both acoustic waveguides and sounds having an expansion and presence will be able to be obtained. Further, as the front surface of the diaphragm of the speaker arranged in the television set is provided with a first acoustic waveguide and the rear surface of the speaker diaphragm is provided with a second acoustic waveguide and the sound radiating mouth of the second acoustic waveguide is arranged, for example, on the top surface of the television set, the sound reproducing band will be able to be expanded by using the sounds of the front surface of the speaker diaphragm and the sounds of the rear surface with one speaker and television sounds having an expansion and presence will be able to be obtained.

REFERENCES:
patent: 2825419 (1958-03-01), Stephens
patent: 2880817 (1959-04-01), Burns et al.
patent: 3978941 (1976-09-01), Siebert
patent: 4168762 (1979-09-01), Griffin, Jr.
patent: 4926487 (1990-05-01), Yoshida et al.
patent: 4987601 (1991-01-01), Goto
patent: 5036946 (1991-08-01), Yoshino
patent: 5119429 (1992-06-01), Chatelain
patent: 5229555 (1993-07-01), Inoue et al.
patent: 5274709 (1993-12-01), Koizumi
patent: 5313525 (1994-05-01), Klasco
patent: 5361380 (1994-11-01), You et al.

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