H - Electricity – 04 – R
Patent
H - Electricity
04
R
181/8
H04R 7/16 (2006.01) H04R 1/02 (2006.01) H04R 1/28 (2006.01) H04R 31/00 (2006.01)
Patent
CA 2002593
A loudspeaker system is provided for installation in a space between a front panel and an enclosed area behind the front panel of a partition such as a wall, ceiling or floor fronting a listening area. Electroacoustical transducers are provided which have a two sided vibratory diaphragm driven by an electrical signal. An enclosure mounts the electroacoustical transducers such that one side of the vibratory diaphragm is in contact with air outside the enclosure between the front and rear panels of the parti- tion, with the enclosure being configured to substantially enclose and define a specific volume of air within the enclosure having a predefined acoustic compliance and which is in contact with the other side of the vibratory diaphragm of the electroacoustical transducers. The enclosure is mounted to the structural partition such that the enclosure extends into the space behind the front panel of the parti- tion so that the one side of the vibratory diaphragm con- tacts a volume of air outside the enclosure within the space behind the front panel of the partition. A passive radiator such as a port which has a specific acoustic mass is pro- vided for coupling the specific volume of air enclosed by the enclosure to the air outside the enclosure in the lis- tening area. A compression plate is provided spaced between the transducer diaphragm and the rear panel to isolate the rear panel from intense direct sound pressure from the transducer. With such an arrangement, the electroacoustical transducer itself and the enclosure are concealed within the structural partition, while the volume of air outside the enclosure means within the space behind the front panel of the partition is substantially acoustically isolated over the approximate frequency range of operation of the electroacoustical transducer from the volume of air outside the enclosure within the listening area.
Gowling Lafleur Henderson Llp
Polk Investment Corporation
LandOfFree
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