Speaker system

Details Speaker system Speaker system

1994-02-03

1995-07-25

Kuntz, Curtis

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

381159, 181156, 181199, H04R 2500, H05K 500, A47B 8106

Patent

active

054369770

ABSTRACT:
A speaker system includes a speaker unit, a cabinet, and a pair of ducts. The cabinet has a baffle plate. The speaker unit is mounted on the baffle plate. The pair of ducts have parallel axes. Each of the ducts has a first end mounted on the baffle plate and a second end disposed in the cabinet. The first end of each duct defines an outer opening formed in a plane parallel to a surface of the baffle plate, and the second end of each duct defines an inner opening at least a part of which is formed in a plane not parallel to the plane forming the outer opening. Each duct has a shape such that a sectional area of each duct is gradually reduced from one of the inner and outer openings to the other opening.

REFERENCES:
patent: 3142353 (1962-10-01), Todisco
patent: 3684051 (1972-08-01), Hopkins
patent: 4142603 (1979-03-01), Johnson
patent: 4231445 (1980-11-01), Johnson
patent: 4284166 (1981-08-01), Gale
patent: 5004066 (1991-04-01), Furukawa
patent: 5115473 (1992-05-01), Yamagishi et al.
patent: 5123500 (1992-06-01), Malhoit et al.
patent: 5189706 (1993-02-01), Saeki

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