Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Graeme Foy0
Daniel Bailey0
Date of Patent
May 19, 2009
0Patent Application Number
111287180
Date Filed
May 13, 2005
0Patent Primary Examiner
Patent abstract
A loudspeaker comprising a loudspeaker drive unit being operable to radiate sound in a forward direction and a rearward direction and an enclosure configured to receive sound radiated in the rearward direction. The enclosure comprises a passageway system comprising a plurality of parts of different lengths. Each of the different length parts has an opening, whereby rearward radiated sound induces standing wave resonances of air in the different length parts at different fundamental frequencies.
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