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Class Information
Number: 381/182
Name: Electrical audio signal processing systems and devices > Electro-acoustic audio transducer > Plural or compound reproducers
Description: Subject matter having a plurality of sound producing transducer having two or more elements performing the same or similar functions.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6081602 |
Arrayable two-way loudspeaker system and method |
Jun. 27, 2000 |
| 6064744 |
Omni-directional loudspeaker |
May. 16, 2000 |
| 6038326 |
Loudspeaker and horn with an additional transducer |
Mar. 14, 2000 |
| 6031920 |
Coaxial dual-parabolic sound lens speaker system |
Feb. 29, 2000 |
| 6031921 |
Loudspeaker unit |
Feb. 29, 2000 |
| 6009182 |
Down-fill speaker for large scale sound reproduction system |
Dec. 28, 1999 |
| 6002780 |
Audio speaker having rotatable tweeter |
Dec. 14, 1999 |
| 5995634 |
Speaker and lamp combination |
Nov. 30, 1999 |
| 5991425 |
Low reflection/low diffraction treatment for loudspeaker transducer diaphragm |
Nov. 23, 1999 |
| 5949893 |
Loudspeaker box |
Sep. 7, 1999 |
| 5946401 |
Linear speaker array |
Aug. 31, 1999 |
| 5926400 |
Apparatus and method for determining the intensity of a sound in a virtual world |
Jul. 20, 1999 |
| 5889876 |
Hemispherical speaker system |
Mar. 30, 1999 |
| 5875255 |
High power electroacoustic speaker system having wide band frequency response |
Feb. 23, 1999 |
| 5857027 |
Loudspeaker |
Jan. 5, 1999 |
| 5850460 |
Bass speaker |
Dec. 15, 1998 |
| 5828766 |
Acoustic speaker system |
Oct. 27, 1998 |
| 5812675 |
Sound reproducing array processor system |
Sep. 22, 1998 |
| 5802194 |
Stereo loudspeaker system with tweeters mounted on rotatable enlongated arms |
Sep. 1, 1998 |
| 5802190 |
Linear speaker array |
Sep. 1, 1998 |
| 5754663 |
Four dimensional acoustical audio system for a homogeneous sound field |
May. 19, 1998 |
| 5742696 |
Modular tweeter |
Apr. 21, 1998 |
| 5717766 |
Stereophonic sound reproduction apparatus using a plurality of loudspeakers in each channel |
Feb. 10, 1998 |
| 5715322 |
Throat device interconnecting a plurality of drive units and a horn |
Feb. 3, 1998 |
| 5689570 |
Sound reproducing array processor system |
Nov. 18, 1997 |
| 5668882 |
Notebook computer speakers |
Sep. 16, 1997 |
| 5642429 |
Sound reproduction system having enhanced low frequency directional control characteristics |
Jun. 24, 1997 |
| 5604815 |
Single magnet audio transducer and method of manufacturing |
Feb. 18, 1997 |
| 5594804 |
Multiple cone type loudspeaker |
Jan. 14, 1997 |
| 5590214 |
Vertical array type speaker system |
Dec. 31, 1996 |
| 5588063 |
Personal multimedia speaker system |
Dec. 24, 1996 |
| 5568562 |
Releasably mounted compound loudspeakers |
Oct. 22, 1996 |
| 5548657 |
Compound loudspeaker drive unit |
Aug. 20, 1996 |
| 5526456 |
Multiple-driver single horn loud speaker |
Jun. 11, 1996 |
| 5448647 |
Electric apparatus having speaker |
Sep. 5, 1995 |
| 5440645 |
Computer speaker |
Aug. 8, 1995 |
| 5388162 |
Sound innovation speaker system |
Feb. 7, 1995 |
| 5386479 |
Piezoelectric sound sources |
Jan. 31, 1995 |
| 5373565 |
Spacer for coaxial loudspeakers |
Dec. 13, 1994 |
| 5339286 |
Composite electroacoustic transducer |
Aug. 16, 1994 |
| 5317642 |
Loudspeakers having torque drive radiators |
May. 31, 1994 |
| 5309518 |
Multiple driver electroacoustical transducing |
May. 3, 1994 |
| 5295194 |
Multi-driver loudspeaker assembly |
Mar. 15, 1994 |
| 5245669 |
Electroacoustic transducer |
Sep. 14, 1993 |
| 5233664 |
Speaker system and method of controlling directivity thereof |
Aug. 3, 1993 |
| 5201002 |
Stereo sound pillow and method of making |
Apr. 6, 1993 |
| 5193119 |
Multiple loudspeaker |
Mar. 9, 1993 |
| 5181253 |
Loudspeaker assembly |
Jan. 19, 1993 |
| 5146508 |
Omindirectional modular siren |
Sep. 8, 1992 |
| 5142587 |
Intra-concha type electroacoustic transducer for use with audio devices etc. |
Aug. 25, 1992 |
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