Loudspeaker and acoustic transformer therefor

Details Loudspeaker and acoustic transformer therefor Loudspeaker and acoustic transformer therefor

1986-02-27

1988-01-12

Fuller, Benjamin R.

Acoustics

Diaphragm

With horn

181185, 381156, 381204, G10K 1300, H04R 700

Patent

active

047185171

ABSTRACT:
A speaker system including a frusto-conical diaphragm, and a phase plug mounted within the volume formed by the diaphragm, the phase plug including a pair of substantially diametric open slots extending across the diaphragm and through the phase plug, with each of the slots having substantially rectangular cross sections transverse to the axis of the diaphragm.

REFERENCES:
patent: 1480785 (1924-01-01), Semple, Jr.
patent: 1707545 (1929-04-01), Wente
patent: 1930915 (1933-10-01), Wente
patent: 2037187 (1936-04-01), Wente
patent: 2107757 (1938-02-01), Kinsley
patent: 2269284 (1942-01-01), Olson
patent: 2717047 (1955-09-01), Buchmann
patent: 2745508 (1956-05-01), Vadersen
patent: 2763333 (1956-09-01), Schumann
patent: 2845135 (1958-07-01), Cohen et al.
patent: 3424873 (1969-01-01), Walsh
patent: 4050541 (1977-09-01), Henricksen
patent: 4157741 (1979-06-01), Goldwater
patent: 4478309 (1984-10-01), Kawamura et al.

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