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US 2012/0070020 A1Published application
Speaker device, audio control device, wall attached with speaker device
OwnerHiroyuki Kanoinventor
Life of this patent
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Abstract
A speaker (10) includes: a speaker unit (20); a passive radiator (50x) in front of the speaker unit (20); and a cabinet (30) storing the speaker unit (20) to cover a rear space behind the speaker unit (20) to seal a space (30x) between the speaker unit (20) and the passive radiator (50x). An effective piston area (50L) of the passive radiator (50x) is larger than an effective piston area (20L) of the speaker unit (20).
Claims12
A speaker comprising:
- a driver;
- a passive radiator in front of said driver;
- and
- a cabinet storing said driver and covering a rear space of said driver to seal a space between said driver and said passive radiator,
- wherein an effective piston area of said passive radiator is larger than an effective piston area of said driver.
2 more elements
Dependencies are inferred from the claim text.