GB386477A - Improvements in or relating to loud speakers - Google Patents
Improvements in or relating to loud speakersInfo
- Publication number
- GB386477A GB386477A GB800032A GB800032A GB386477A GB 386477 A GB386477 A GB 386477A GB 800032 A GB800032 A GB 800032A GB 800032 A GB800032 A GB 800032A GB 386477 A GB386477 A GB 386477A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sections
- section
- diaphragm
- compliant coupling
- whilst
- 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
-
- 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
- H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
386,477. Diaphragms. MARCONI'S S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.-(Radio Corporation of America ; 570, Lexington Avenue, New York, U.S.A.) March 17, 1932, No. 8000. [Class 40 (iv).] A diaphragm for a hornless loud-speaker comprises a number of sections 3, 4 interconnected by compliant coupling means in the form of shallow corrugations 5, the rigidity of which is designed so that both sections vibrate as a whole for low frequencies whilst at higher frequencies the section 3 alone vibrates. The actuating means, which is shown as a moving coil 2, is connected to the inner section 3 whilst the outer edge of section 4 is connected to the frame 6 by the compliant coupling 7. Modifications are described in which the diaphragm is composed of a number of flat sections or of more than two frusto-conical sections connected to each other by a single corrugation. Fig. 4 shows a further modification in which the compliant coupling means connecting the diaphragm portions 23, 24 is constituted by radial strips 26 separated by circumferential slots 22 which may, if desired, be closed by a thin strip 27 of leather, paper, rubber, &c. Further, the outer section 24, or, if desired, both sections may be provided with corrugations 28.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US462641A US1876831A (en) | 1930-06-20 | 1930-06-20 | Sound reproducer |
GB800032A GB386477A (en) | 1932-03-17 | 1932-03-17 | Improvements in or relating to loud speakers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB800032A GB386477A (en) | 1932-03-17 | 1932-03-17 | Improvements in or relating to loud speakers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB386477A true GB386477A (en) | 1933-01-19 |
Family
ID=9843855
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB800032A Expired GB386477A (en) | 1930-06-20 | 1932-03-17 | Improvements in or relating to loud speakers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB386477A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2810447A (en) * | 1955-05-31 | 1957-10-22 | Ford Motor Co | Rear seat speaker |
EP2506599A3 (en) * | 2011-03-28 | 2014-01-22 | Suzhou Sonavox Electronics Co., Ltd. | A diaphragm used in a loudspeaker and a loudspeaker |
-
1932
- 1932-03-17 GB GB800032A patent/GB386477A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2810447A (en) * | 1955-05-31 | 1957-10-22 | Ford Motor Co | Rear seat speaker |
EP2506599A3 (en) * | 2011-03-28 | 2014-01-22 | Suzhou Sonavox Electronics Co., Ltd. | A diaphragm used in a loudspeaker and a loudspeaker |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US1965830A (en) | Acoustic device | |
GB1528066A (en) | Directional electro-acoustical transducer | |
US4100992A (en) | Loudspeaker | |
US4506759A (en) | Loudspeaker enclosure arrangement for voice communication terminals | |
GB386477A (en) | Improvements in or relating to loud speakers | |
GB563595A (en) | Improvements relating to microphones | |
US1876831A (en) | Sound reproducer | |
US2077170A (en) | Acoustic device | |
US1690840A (en) | Telephone and the like | |
US1978200A (en) | Electrostatic acoustic device | |
US1901898A (en) | Sound translating device | |
GB465441A (en) | Sound reproducing apparatus | |
US3837425A (en) | Edge-damped diaphragm for electrodynamic loudspeakers | |
US2327137A (en) | Hearing aid microphone | |
GB512610A (en) | Improvements in or relating to loud speakers | |
US2007750A (en) | Acoustic apparatus | |
CN205005256U (en) | Coaxial full speaker frequently | |
EP0129320B1 (en) | Loudspeaker enclosure arrangement for voice communication terminals | |
GB460994A (en) | Improvements in electro-dynamic sound reproducers | |
GB854851A (en) | Improvements in or relating to loudspeakers | |
US1648226A (en) | Sound-reproducing instrument | |
US1722805A (en) | Sound radiator | |
GB455208A (en) | Improvements in electro-dynamic loud speakers, microphones and the like sound reproducing and recording apparatus | |
US1763055A (en) | Loud-speaker | |
US1630011A (en) | Loud speaker |