FR899711A - Speaker diaphragms improvements - Google Patents
Speaker diaphragms improvementsInfo
- Publication number
- FR899711A FR899711A FR899711DA FR899711A FR 899711 A FR899711 A FR 899711A FR 899711D A FR899711D A FR 899711DA FR 899711 A FR899711 A FR 899711A
- Authority
- FR
- France
- Prior art keywords
- speaker diaphragms
- diaphragms
- speaker
- diaphragms improvements
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
- H04R7/125—Non-planar diaphragms or cones comprising a plurality of sections or layers comprising a plurality of superposed layers in contact
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR899711T | 1943-11-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR899711A true FR899711A (en) | 1945-06-08 |
Family
ID=9392392
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR899711D Expired FR899711A (en) | 1943-11-12 | 1943-11-12 | Speaker diaphragms improvements |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR899711A (en) |
-
1943
- 1943-11-12 FR FR899711D patent/FR899711A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR938267A (en) | Improvements relating to hearing aid devices | |
FR939369A (en) | Improvements to directional microphones | |
FR895938A (en) | Metal diaphragm manolimnigraph | |
FR915758A (en) | Harvester improvements | |
FR939408A (en) | Adjustable aerial improvements | |
FR899711A (en) | Speaker diaphragms improvements | |
FR57814E (en) | Microphone improvements | |
FR939106A (en) | Improvements to electro-acoustic converters | |
FR981257A (en) | Brake improvements | |
FR904065A (en) | Cabinet improvements | |
FR907524A (en) | Microphone capsules | |
ES172358A1 (en) | IMPROVEMENTS IN MICROPHONES | |
FR895947A (en) | Improvements to electrodynamic microphones | |
FR903758A (en) | Bra refinements | |
FR977486A (en) | Microphone refinements | |
FR902290A (en) | Refrigerant improvements | |
FR939127A (en) | Microphones | |
FR982535A (en) | Framing | |
FR898504A (en) | Fan improvements | |
FR982018A (en) | Carburetor improvements | |
FR947690A (en) | Carburetor improvements | |
FR945478A (en) | Carburetor improvements | |
DK66117C (en) | Microphone. | |
FR917083A (en) | Improvements to sound cinematography devices | |
FR898736A (en) | Improvements to manometers |