| Patents for H04R 9 - Transducers of moving-coil, moving-strip, or moving-wire type (11,486) |
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| 11/05/1985 | CA1196216A1 Devices comprising a body of fe-ni magnetic alloy |
| 10/29/1985 | US4550428 Driver unit for automotive audio speaker |
| 10/29/1985 | US4550229 Trumpet horn speaker |
| 10/29/1985 | US4550228 Ribbon speaker system |
| 10/15/1985 | US4547874 Moving coil type cartridge mounted on cantilever within central opening of ring magnet |
| 10/15/1985 | US4547632 Dynamic loudspeaker |
| 10/15/1985 | US4547631 Large-excursion electroacoustic transducer |
| 10/01/1985 | US4544806 Ribbon-type transducer with a multi-layer diaphragm |
| 10/01/1985 | US4544805 Plane speaker |
| 09/03/1985 | US4539442 Loudspeaker |
| 08/28/1985 | EP0152926A2 Electrodynamic loudspeaker with omni-directional sound radiations |
| 08/20/1985 | US4536623 Electro-acoustic transducer with diaphragm and blank therefor |
| 08/13/1985 | CA1191937A1 Electro-acoustic transducer |
| 08/07/1985 | EP0150976A2 Soundstage boundary expansion system |
| 07/30/1985 | US4532620 Coil assembly having stacked spiral pattern layers and method of making |
| 07/30/1985 | US4532383 Electroacoustic transducer having a variable thickness diaphragm |
| 07/30/1985 | EP0112383A4 Electro-acoustic transducer with diaphragm. |
| 07/23/1985 | US4531025 Loudspeaker with commutated coil drive |
| 07/16/1985 | US4529846 Dynamic telephone receiver with magnetic shunt |
| 07/02/1985 | US4527017 Magnet system for an electroacoustic transducer |
| 06/26/1985 | EP0039740B1 Loud-speaker |
| 06/25/1985 | US4525604 Horn loudspeaker with convex diaphragm |
| 06/05/1985 | EP0143383A2 Electro-acoustic transducers |
| 05/28/1985 | US4520238 Pickup device for picking up vibration transmitted through bones |
| 05/28/1985 | US4520237 Electrodynamic speaker |
| 05/21/1985 | US4519063 Phono pickup cartridge |
| 05/15/1985 | EP0141447A2 Loudspeaker system and loudspeaker for converting an n-bit digitized electric signal into an acoustic signal |
| 05/14/1985 | US4517416 Electro-acoustic transducer having a diaphragm comprising a layer of polymethacrylimide foam |
| 04/30/1985 | US4514599 Speaker for automotive vehicle audio system having a vehicle panel serving as sound-amplifying medium |
| 04/17/1985 | EP0137624A2 Electroacoustic transducer |
| 04/17/1985 | EP0137550A1 Loudspeaker system and loudspeaker for converting an n-bit digitized electric signal into an acoustic signal |
| 04/17/1985 | EP0137549A1 Hybrid loudspeaker system, at option with one or more correction circuits |
| 04/02/1985 | US4508941 Voice coil centering and suspension for vented pole piece |
| 03/26/1985 | US4507800 Enclosed magnet loudspeaker |
| 03/19/1985 | US4506117 Electroacoustic transducer |
| 03/12/1985 | US4504704 Loudspeaker system |
| 02/12/1985 | US4499340 Speaker for automotive audio system with vehicle panel utilized as sound amplifying medium |
| 01/29/1985 | US4497052 Stylus for reproducing information signals recorded on a recording medium |
| 01/29/1985 | US4496021 360 Degree radial reflex orthospectral horn for high-frequency loudspeakers |
| 01/22/1985 | US4495638 Audio-band electro-mechanical vibration converter |
| 01/15/1985 | US4494227 Stereo phono pick-up and/or cutter |
| 01/08/1985 | US4492827 Horn speaker with reduced magnetic flux leakage |
| 01/01/1985 | US4491698 Electro-acoustic transducer with diaphragm and blank therefor |
| 12/27/1984 | CA1180101A Magnet system for an electroacoustic transducer |
| 12/27/1984 | CA1179950A Pick-up and/or cutter |
| 12/11/1984 | US4488284 Moving-coil type pickup cartridge |
| 12/11/1984 | US4488012 MFB Loudspeaker |
| 12/05/1984 | EP0127247A2 Tunable response transducer |
| 11/20/1984 | US4484320 Apparatus and method for cutting information into a metallic record carrier |
| 11/20/1984 | US4484037 Ribbon-type electro-acoustic transducer with low distortion and improved sensitivity |
| 11/20/1984 | CA1178211A1 Pick-up and/or cutter |
| 10/31/1984 | EP0123359A1 Electroacoustic transducer unit with reduced resonant frequency and mechanical spring with negative stiffness, preferably used in such a transducer unit |
| 10/31/1984 | EP0123343A1 Ribbon-type electro-acoustic transducer with an increased operating frequency range |
| 10/31/1984 | EP0122990A1 Moving coil loudspeakers |
| 10/30/1984 | US4480155 Audio frequency signal current carrying transducer |
| 10/23/1984 | US4479035 Ceramic voice coil assembly |
| 10/16/1984 | US4477699 Mechanical two-way loudspeaker |
| 09/25/1984 | US4473723 Ribbon loudspeaker having corregated ribbon for reducing distortion |
| 09/18/1984 | US4472605 Electrodynamic loudspeaker for low and medium sound frequencies |
| 09/18/1984 | US4472604 Planar type electro-acoustic transducer and process for manufacturing same |
| 09/12/1984 | EP0118159A1 Ribbon-type transducer with a multi-layer diaphragm |
| 09/11/1984 | US4471173 For carrying a signal current |
| 09/11/1984 | US4471172 Planar diaphragm transducer with improved magnetic circuit |
| 08/29/1984 | EP0116957A1 Ribbon speaker system |
| 08/28/1984 | US4468530 Loudspeaker system |
| 08/14/1984 | US4465906 Low-leakage pot magnet system for moving-coil loudspeakers |
| 08/14/1984 | US4465905 Loudspeaker assembly |
| 08/14/1984 | CA1172744A1 Speaker unit for headphones |
| 08/08/1984 | EP0114910A1 Subwoofer speaker system |
| 08/07/1984 | US4464785 Loudspeaker system |
| 07/25/1984 | EP0113732A1 Electromagnetic-acoustic transducer |
| 07/24/1984 | US4461933 Electrical/mechanical transducers |
| 07/24/1984 | US4461932 Ribbon type speaker and method of assembling magnetic circuit thereof |
| 07/04/1984 | EP0112559A1 Loudspeaker |
| 07/04/1984 | EP0112383A1 Electro-acoustic transducer with diaphragm. |
| 06/19/1984 | US4455639 Moving coil type pickup cartridge |
| 06/05/1984 | US4453046 Elastic support for electroacoustic transducers |
| 05/30/1984 | EP0109646A1 Pickup device for picking up vibration transmitted through bones |
| 05/29/1984 | US4451928 Multi-speaker system for use in automobiles |
| 04/10/1984 | CA1165248A1 Electro-acoustic transducer |
| 03/20/1984 | US4438297 Dynamic speaker |
| 03/13/1984 | US4437179 Phono pickup cartridge |
| 03/06/1984 | CA1163355A1 Mechanical filter for an electrodynamic transducer |
| 02/21/1984 | US4433214 Acoustical transducer with a slotted piston suspension |
| 02/02/1984 | WO1984000460A1 Electromagnetic-acoustic transducer |
| 02/01/1984 | EP0099410A1 Full range planar induction loudspeaker |
| 01/31/1984 | US4429379 Device for controlling tone arm carrying moving coil type pickup |
| 01/25/1984 | EP0098895A1 Rigid diaphragm transducer with plural coils |
| 01/24/1984 | US4427846 Moving coil loudspeakers |
| 01/24/1984 | US4427845 Dynamic microphone |
| 01/17/1984 | US4426556 Electrodynamic loudspeaker |
| 01/17/1984 | US4426553 Vehicle loudspeaker arrangement with magnetic-field-sensitive device |
| 01/17/1984 | CA1160732A1 Securing of lead wires to electro-acoustic transducers |
| 01/05/1984 | WO1984000093A1 Electro-acoustic transducer with diaphragm and blank therefor |
| 12/20/1983 | US4421956 Loud speaker with minimized magnetic leakage |
| 12/20/1983 | US4421381 Mechanical vibrating element |
| 12/07/1983 | EP0095876A2 Multi-driver-loudspeaker |
| 11/29/1983 | US4418247 Electrodynamic transducer |
| 11/16/1983 | EP0094083A2 Multi-channel moving coil pick-up with spaced coils |
| 11/16/1983 | EP0093736A1 Loudspeaker assembly |