GB323264A - Improvements in and relating to loud speakers - Google Patents
Improvements in and relating to loud speakersInfo
- Publication number
- GB323264A GB323264A GB2787428A GB2787428A GB323264A GB 323264 A GB323264 A GB 323264A GB 2787428 A GB2787428 A GB 2787428A GB 2787428 A GB2787428 A GB 2787428A GB 323264 A GB323264 A GB 323264A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- coil
- relating
- cones
- loud speakers
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/021—Diaphragms comprising cellulose-like materials, e.g. wood, paper, linen
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
323,264. Dufort, C. J. Nesbitt-, and O. & S. Oilless Bearing Co., Ltd. Sept. 28, 1928. Magnetic instruments; diaphragms.-The diaphragm a of a moving coil loud-speaker is formed of a number of truncated cones a', a<2>, a<3>, the coil e being connected to the innermost cone a<1> as shown. The joints between the cones and the outer edge of the diaphragm are preferably strengthened by paper &c. rings f. The periphery of the diaphragm is connected by thin leather b to a baffle g<1> and a centring device of flexible material g is adjustably secured to the magnet core h by a pin i and nuts j. Additional centring means in the form of strings c secured to the coil cylinder d may also be provided.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2787428A GB323264A (en) | 1928-09-28 | 1928-09-28 | Improvements in and relating to loud speakers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2787428A GB323264A (en) | 1928-09-28 | 1928-09-28 | Improvements in and relating to loud speakers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB323264A true GB323264A (en) | 1929-12-30 |
Family
ID=10266677
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2787428A Expired GB323264A (en) | 1928-09-28 | 1928-09-28 | Improvements in and relating to loud speakers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB323264A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1284465B (en) * | 1966-07-07 | 1968-12-05 | Siemens Ag | Membrane for electrodynamic converter |
GB2449842A (en) * | 2007-05-03 | 2008-12-10 | Pss Belgium Nv | Loudspeaker with a diaphragm stiffening element |
-
1928
- 1928-09-28 GB GB2787428A patent/GB323264A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1284465B (en) * | 1966-07-07 | 1968-12-05 | Siemens Ag | Membrane for electrodynamic converter |
GB2449842A (en) * | 2007-05-03 | 2008-12-10 | Pss Belgium Nv | Loudspeaker with a diaphragm stiffening element |
GB2449842B (en) * | 2007-05-03 | 2012-02-01 | Pss Belgium Nv | Loudspeaker with a stiffening element |
US8422724B2 (en) | 2007-05-03 | 2013-04-16 | Pss Belgium N.V. | Loudspeaker with a stiffening element |
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