Speaker system

Acoustics – Diaphragm and enclosure – Reflex baffle

Reexamination Certificate

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Details

C181S144000, C181S145000, C181S151000, C381S335000, C381S354000, C381S186000

Reexamination Certificate

active

07021419

ABSTRACT:
A small-sized speaker system having a very excellent bass-range reproduction capability includes a sound radiation component for guiding acoustic waves radiated from the speaker units to a free space by causing a larger degree of air compression and expansion than in the case where acoustic waves are directly radiated to the free space with the speaker units mounted in corresponding enclosures of the same shape as the speaker units. The speaker system has 20% or more lower f0than in the case where acoustic waves are directly radiated to the free space with the speaker units mounted in corresponding enclosures of the same shape as the speaker units.

REFERENCES:
patent: 2969848 (1961-01-01), Farwell
patent: 4142603 (1979-03-01), Johnson
patent: 4326099 (1982-04-01), Maille
patent: 4704729 (1987-11-01), Franzini et al.
patent: 4733749 (1988-03-01), Newman et al.
patent: 5012890 (1991-05-01), Nagi et al.
patent: 5109422 (1992-04-01), Furukawa
patent: 5255321 (1993-10-01), Murray et al.
patent: 5714721 (1998-02-01), Gawronski et al.
patent: 5895896 (1999-04-01), Alton, Jr.
patent: 6237715 (2001-05-01), Tracy
patent: 6275597 (2001-08-01), Roozen et al.
patent: 6343134 (2002-01-01), Czerwinski
patent: 6604602 (2003-08-01), Kim
patent: 6801633 (2004-10-01), Tracy
patent: 2004/0173402 (2004-09-01), Morkerken
patent: 4019645 (1991-01-01), None
patent: 0 390 123 (1990-10-01), None
patent: 50-39123 (1975-04-01), None
patent: 1-78487 (1989-05-01), None
patent: 4-151997 (1992-05-01), None
patent: 05122785 (1993-05-01), None
patent: 5-82190 (1993-11-01), None
patent: 9-130886 (1997-05-01), None
patent: 9-149487 (1997-06-01), None
patent: 2002078052 (2002-03-01), None

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