Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Plural or compound reproducers
Patent
1996-10-30
1998-03-31
Isen, Forester W.
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Plural or compound reproducers
181154, 181153, 381 24, H04R 102
Patent
active
057347328
ABSTRACT:
Apparatus for mounting a speaker to a ceiling of a room that comprises an attaching ring adapted to be attached to a joist. A mounting ring is connected to the attaching ring. Apparatus to position the speaker at an angle relative to a front surface of the mounting ring and rotatably supports the speaker on the mounting ring so that a sound directional axis of the speaker may be rotated toward a chosen position in the room.
REFERENCES:
patent: 4194086 (1980-03-01), Solla
patent: 4441577 (1984-04-01), Kurihara
patent: 4475226 (1984-10-01), Greenberg
patent: 4673057 (1987-06-01), Glassco
patent: 4696037 (1987-09-01), Fierens
Isen Forester W.
Post, III Harry C.
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