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Class Information
Number: 181/152
Name: Acoustics > Diaphragm and enclosure > With horn
Description: Subject matter including a tube of varying sectional area associated with the diaphragm for intensifying the sound waves produced therefrom.










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8678130 Audio apparatus Mar. 25, 2014
8641197 Acoustical receiver and pen transcription system adapted for rejecting virtual pen images Feb. 4, 2014
8627920 Folded horn enclosure with inter-channel reflex-porting Jan. 14, 2014
8607922 High frequency horn having a tuned resonant cavity Dec. 17, 2013
8528690 Sound effect amplication diffuser Sep. 10, 2013
8515102 Line array loudspeaker Aug. 20, 2013
8479871 Ceiling speaker assembly Jul. 9, 2013
8401216 Acoustic traveling wave tube system and method for forming and propagating acoustic waves Mar. 19, 2013
8397860 Speaker enclosure Mar. 19, 2013
8353384 Method and apparatus for a loudspeaker assembly Jan. 15, 2013
8327974 Sound enhancing apparatus Dec. 11, 2012
8297402 Ceiling speaker assembly Oct. 30, 2012
8286749 Ceiling loudspeaker system Oct. 16, 2012
8256566 Speaker enclosure Sep. 4, 2012
8224001 Line array loudspeaker Jul. 17, 2012
8205712 Ported loudspeaker enclosure with tapered waveguide absorber Jun. 26, 2012
8191674 Acoustic loading device for loudspeakers Jun. 5, 2012
8149097 Horn device having a power supply and an electrical control circuit Apr. 3, 2012
8141675 Micro-speaker Mar. 27, 2012
8139783 Speaker assembly arrangement for a vehicle and method of mounting a speaker Mar. 20, 2012
8127885 Method and apparatus for a loudspeaker assembly Mar. 6, 2012
8109360 Method and apparatus for a loudspeaker assembly Feb. 7, 2012
8091681 Method and apparatus for a loudspeaker assembly Jan. 10, 2012
8066095 Transverse waveguide Nov. 29, 2011
8050442 Cascaded transducer array arrangement for control over an acoustic pressure gradient through a horn Nov. 1, 2011
8042647 Speaker side air supply Oct. 25, 2011
8004390 Horn device having a plural power supply Aug. 23, 2011
7938223 Sintered elements and associated systems May. 10, 2011
7878296 Speaker embodying a stereo sound Feb. 1, 2011
7866438 Method and apparatus for a loudspeaker assembly Jan. 11, 2011
7789192 Loudspeaker port handle Sep. 7, 2010
7760899 Subwoofer with cascaded array of drivers arranged with staggered spacing Jul. 20, 2010
7744729 Ultrasonic energy system and method including a ceramic horn Jun. 29, 2010
7743878 Folded horn enclosure with unitary pathway Jun. 29, 2010
7731823 Ultrasonic energy system and method including a ceramic horn Jun. 8, 2010
7708112 Waveguide phase plug May. 4, 2010
7669692 Sound diffuser Mar. 2, 2010
7624839 Enclosure for symbiotic active/passive operation of an acoustic driver Dec. 1, 2009
7556122 Upward-exhausting corner horn enclosure Jul. 7, 2009
7520368 Horizontally folded reflex-ported bass horn enclosure Apr. 21, 2009
7513332 Convertible folded horn enclosure with improved compactness Apr. 7, 2009
7506721 Convertible folded horn enclosure Mar. 24, 2009
7454030 Subwoofer with cascaded linear array of drivers Nov. 18, 2008
7392880 Dual range horn with acoustic crossover Jul. 1, 2008
7319772 Speaker device for improving mid/high-range frequencies Jan. 15, 2008
7297238 Ultrasonic energy system and method including a ceramic horn Nov. 20, 2007
7278513 Internal lens system for loudspeaker waveguides Oct. 9, 2007
7275621 Skew horn for a loudspeaker Oct. 2, 2007
7268467 Acoustic transducer Sep. 11, 2007
7252175 Speaker apparatus and manufacturing method of speaker apparatus Aug. 7, 2007

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