| Patents for H04R 9 - Transducers of moving-coil, moving-strip, or moving-wire type (11,486) |
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| 03/14/2000 | US6038327 Electroacoustic transducer comprising a closing member for closing the rear volume of the transducer |
| 03/09/2000 | WO2000013464A1 Loudspeakers comprising a resonant panel-form member |
| 03/09/2000 | WO2000013463A1 Pitch carbon composite components for loudspeakers |
| 03/09/2000 | DE19840374A1 Centering membrane for loudspeaker has at least two segments, each of which is continuously curved, with apices on side of centering membrane facing vibration system membrane |
| 03/09/2000 | CA2341867A1 Loudspeakers comprising a resonant panel-form member |
| 03/08/2000 | CN1050259C Method for manufacturing cone of loud-speaker and its structure |
| 03/08/2000 | CA2270726A1 Loudspeaker |
| 03/02/2000 | WO2000011910A1 Harmonic amplifier and corresponding electroacoustic transducer |
| 03/01/2000 | EP0981928A2 Pane-form loudspeakers |
| 03/01/2000 | EP0981927A2 Acoustic apparatus comprising an array of loudspeakers |
| 02/29/2000 | US6031925 Telescoping loudspeaker has multiple voice coils |
| 02/29/2000 | US6031920 Coaxial dual-parabolic sound lens speaker system |
| 02/16/2000 | EP0979592A1 Slotted diaphragm loudspeaker |
| 02/09/2000 | CN2363450Y Aluminium band type tweeter |
| 02/03/2000 | WO2000005925A1 Miniature full range loudspeaker |
| 02/03/2000 | WO2000005805A1 Low frequency vibrator |
| 02/02/2000 | EP0976301A1 An electroacoustic transducer and a diaphragm for an electroacoustic transducer |
| 02/02/2000 | CN1243653A Electro-dynamic exciter |
| 02/02/2000 | CN1243652A Loudspeakers |
| 02/01/2000 | US6020805 Permanent magnet assembly |
| 01/26/2000 | EP0974243A1 An electroacoustic transducer and a diaphragm for an electroacoustic transducer |
| 01/26/2000 | CN1242921A Loudspeaker |
| 01/26/2000 | CN1242721A Electric-mechanical-acoustic transducer and method for mfg. same |
| 01/19/2000 | CN2359849Y Receiver and transmitter |
| 01/13/2000 | WO2000002417A1 Resonant panel-form loudspeaker |
| 01/13/2000 | CA2336271A1 Resonant panel-form loudspeaker |
| 01/12/2000 | EP0971560A2 Multiple voicecoil and driver transducing |
| 01/12/2000 | EP0971559A2 Loudspeaker |
| 01/12/2000 | EP0970758A1 Electric-mechanical-acoustic transducer and a method of manufacturing the same |
| 01/05/2000 | EP0969067A1 Synthetic chloroprene rubber adhesive composition and process for producing speaker by using the same |
| 01/05/2000 | EP0821861A4 Dual coil drive with multipurpose housing |
| 01/05/2000 | CN2357457Y Upside-down mounted magnetic path loadspeaker |
| 01/05/2000 | CN1240326A Electro-acoustic transducer coupling holohedral magnetic field structure |
| 12/30/1999 | DE19827793A1 Schwingspulenanordnung und Verfahren zu ihrer Herstellung Voice coil assembly and process for their preparation |
| 12/29/1999 | WO1999067975A1 Telescoping loudspeaker having multiple coaxial voice coils |
| 12/29/1999 | EP0967831A2 Mobil coil device and method for its implementation |
| 12/29/1999 | CN2356454Y 音头 Ondo |
| 12/29/1999 | CN1239860A Constant power driving method for loudspeaker |
| 12/28/1999 | US6008714 Thin-Structured electromagnetic transducer |
| 12/23/1999 | WO1999066764A1 Speaker |
| 12/23/1999 | WO1999066763A1 Device having two coaxially disposed bodies which are movable relative to one another along a translation axis |
| 12/23/1999 | DE19922053A1 Tragbare elektronische Vorrichtung mit einem Lautsprecheraufbau Portable electronic device with a speaker layout |
| 12/22/1999 | CN2355508Y Speaker neck |
| 12/21/1999 | US6005957 Loudspeaker pressure plate |
| 12/21/1999 | US6003766 Vending machine |
| 12/16/1999 | WO1999065274A1 Resonant panel-form acoustic devices |
| 12/16/1999 | CA2334239A1 Resonant panel-form acoustic devices |
| 12/08/1999 | EP0962121A1 Movable coil for loudspeakers and microphones |
| 12/08/1999 | CN2353105Y Yoke iron improved structure of receiver |
| 12/07/1999 | US5999633 Speaker damper |
| 11/30/1999 | US5995635 Sound pickup and amplifier apparatus for vibrating strings |
| 11/25/1999 | WO1999060820A1 Driver for a flat acoustic panel |
| 11/25/1999 | WO1999060819A1 Sound reproduction device working according to the bending wave principle |
| 11/25/1999 | WO1999060817A1 Device for dynamic excitation of panel loudspeakers |
| 11/24/1999 | CN1236466A Compact horn speaker |
| 11/24/1999 | CN1236286A Integrated speaker assembly of portable electronic device |
| 11/24/1999 | CN1236285A Loudspeaker |
| 11/24/1999 | CN1236251A Portable electronic device with speaker assembly |
| 11/23/1999 | US5991424 Planar diaphragm speaker with heat dissipator |
| 11/18/1999 | DE19821862A1 Flat panel loudspeaker |
| 11/18/1999 | DE19821861A1 Device for dynamically exciting flat panel loudspeaker |
| 11/18/1999 | DE19821860A1 Driver for flat panel loudspeaker |
| 11/18/1999 | DE19816060A1 Lautsprecher Speaker |
| 11/17/1999 | EP0957658A1 Thin electromagnetic transducer |
| 11/17/1999 | EP0956736A2 Electro-dynamic exciter |
| 11/16/1999 | US5987148 Driver for a horn radiator |
| 11/10/1999 | EP0847661B1 Acoustic device |
| 11/10/1999 | CN2348533Y Self-adaptive spring centering support sheet for loudspeaker |
| 11/10/1999 | CN1234716A Loudspeaker and loudspeaker apparatus |
| 11/04/1999 | WO1999056499A1 A string vibration type of loudspeaker |
| 11/03/1999 | EP0954200A2 Loudspeaker |
| 11/03/1999 | EP0954199A1 Loudspeaker |
| 10/28/1999 | WO1999055118A1 Electro-acoustic transducer with electrically conducting membrane |
| 10/27/1999 | EP0951801A1 Loudspeakers |
| 10/26/1999 | US5973422 Low frequency vibrator |
| 10/24/1999 | CA2236995A1 Chord-like vibration loudspeaker |
| 10/20/1999 | CN1232361A Liquid fixed electrode for condenser loudspeaker |
| 10/20/1999 | CN1232360A Ring conductive diaphragm, and injection moulded and printed electrode constituted capacitor loudspeaker |
| 10/19/1999 | US5970158 Compact horn speaker |
| 10/19/1999 | US5969298 Compression driver |
| 10/19/1999 | US5966797 Method of manufacturing a damper for a loudspeaker |
| 10/14/1999 | WO1999052325A1 Speaker apparatus |
| 10/14/1999 | WO1998054924A3 Ultra structure subwoofer |
| 10/14/1999 | DE19804264C1 Loudspeaker device for motor vehicle display or operating unit |
| 10/13/1999 | CN2343729Y Loadspeaker coil decoiling structure |
| 09/30/1999 | DE19913558A1 Loudspeaker construction for reduced production costs |
| 09/29/1999 | EP0945043A1 Electroacoustic transducer comprising a closing member for closing the rear volume of the transducer |
| 09/23/1999 | WO1999048329A1 Shorting rings in dual-coil dual-gap loudspeaker drivers |
| 09/15/1999 | EP0942626A2 Loudspeaker |
| 09/15/1999 | CN2338933Y Low cast loudspeaker |
| 09/14/1999 | US5953438 Planar electromagnetic transducer |
| 09/14/1999 | US5953436 Apparatus for generating an audible tone |
| 09/10/1999 | WO1999045742A1 A loudspeaker featuring acoustic friction to damp resonance |
| 09/08/1999 | CN2337734Y Discrete driving radial moving-coil loudspeaker |
| 09/08/1999 | CN1228005A Loud-speaker |
| 09/01/1999 | EP0939577A2 Loudspeaker pressure plate |
| 09/01/1999 | CN1227696A Taut armature reciprocating impulse transducer |
| 08/19/1999 | WO1999041941A1 An electroacoustic transducer and a diaphragm for an electroacoustic transducer |
| 08/19/1999 | WO1999041940A1 An electroacoustic transducer and a diaphragm for an electroacoustic transducer |
| 08/18/1999 | CN2334129Y Loud-speaker |