GB312603A - Improvements in loud speakers - Google Patents
Improvements in loud speakersInfo
- Publication number
- GB312603A GB312603A GB30148/28A GB3014828A GB312603A GB 312603 A GB312603 A GB 312603A GB 30148/28 A GB30148/28 A GB 30148/28A GB 3014828 A GB3014828 A GB 3014828A GB 312603 A GB312603 A GB 312603A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- secured
- loud
- throat
- pole
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/045—Mounting
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
312,603. Dynamic Unit Corporation of America, (Assignees of Abrahams, A. I., and Jonssens. E. J.). May 28, 1928, [Convention date]. Loud-speakers; magnetic instruments; diaphragms.-The diaphragm of a loud-speaker is of non-magnetic material and is mounted by impregnated material having little or no tendency to stretch. The diaphragm 22 is preferably made of an aluminium alloy and the moving coil C is wound on a projecting flange. The mount T may be of tracing cloth and is secured to a bevelled edge by serrations 21, Fig. 7. The diaphragm may be of any concave shape. A deflector is mounted in the throat 18 leading to the horn and has a convex portion 30 shaped like the diaphragm 22 and a portion 30<1> tapered to a cone of angle greater than the conical portion of the throat. The casing 1 Fig. 1, forms the outer pole of the field magnet, the inner pole 2 having a pole piece 5 secured by a screw 6. The leads to the coil are secured to terminals B.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US281052A US1711514A (en) | 1928-05-28 | 1928-05-28 | Electromagnetic driving unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB312603A true GB312603A (en) | 1930-04-22 |
Family
ID=23075747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30148/28A Expired GB312603A (en) | 1928-05-28 | 1928-10-18 | Improvements in loud speakers |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1711514A (en) |
| GB (1) | GB312603A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2538621A (en) * | 1945-04-23 | 1951-01-16 | Bell Telephone Labor Inc | Electrodynamic transducer and connector therefor |
| US2755343A (en) * | 1951-10-05 | 1956-07-17 | Univ Loudspeakers Inc | Blast-proof and submergence-proof sound reproducing device |
| US2847326A (en) * | 1952-03-13 | 1958-08-12 | Philips Corp | Microphone comprising a magnet system |
| JP4551581B2 (en) * | 2001-03-27 | 2010-09-29 | スター精密株式会社 | Speaker |
| US8036408B2 (en) * | 2005-12-22 | 2011-10-11 | Harman International Industries, Incorporated | Phasing plug for a compression driver |
-
1928
- 1928-05-28 US US281052A patent/US1711514A/en not_active Expired - Lifetime
- 1928-10-18 GB GB30148/28A patent/GB312603A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1711514A (en) | 1929-05-07 |
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