GB722263A - Improvements in or relating to loudspeakers having a conical diaphragm - Google Patents
Improvements in or relating to loudspeakers having a conical diaphragmInfo
- Publication number
- GB722263A GB722263A GB23045/51A GB2304551A GB722263A GB 722263 A GB722263 A GB 722263A GB 23045/51 A GB23045/51 A GB 23045/51A GB 2304551 A GB2304551 A GB 2304551A GB 722263 A GB722263 A GB 722263A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- cone
- plug
- loud
- conical
- 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
- 239000002184 metal Substances 0.000 abstract 2
- 239000004033 plastic Substances 0.000 abstract 1
- 239000002023 wood Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
722,263. Loud-speakers. GENERAL ELECTRIC CO., Ltd., and BRITTAIN, F. H. Sept, 19, 1952 [Oct. 3, 1951], No. 23045/51. Class 40 (4). In a loud-speaker having a conical diaphragm, a rigid plug occupying between 10 and 20 per cent of the volume of the diaphragm cone is disposed within the boundaries of the cone, and at least a portion of the plug is in the form of a cone having the same angle as the diaphragm and extends from the apex of the cone with its curved surface close to the diaphragm. The presence of the plug is said to smooth out the frequency response of the loud-speaker. Plug 5, Fig. 2, comprises two cylinders 8, 9 joined by a conical portion 10 and the lengths of the cone and outer cylinder found to give the optimum result are stated to be 15-25 per cent and 50 per cent of the depth of the diaphragm, respectively. The distance between the conical plug surface and the diaphragm is said to be critical and limits of <1>/16 to <1>/4 inch are given in connection with a 6-inch metal cone. The plugs which may be of wood, metal, or plastic may be hollow provided that hollowing does not give rise to undesirable resonance. Specifications 461,073 and 604,159 are referred to.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB23045/51A GB722263A (en) | 1951-10-03 | 1951-10-03 | Improvements in or relating to loudspeakers having a conical diaphragm |
US312111A US2706529A (en) | 1951-10-03 | 1952-09-29 | Loudspeaker having a conical diaphragm |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB23045/51A GB722263A (en) | 1951-10-03 | 1951-10-03 | Improvements in or relating to loudspeakers having a conical diaphragm |
Publications (1)
Publication Number | Publication Date |
---|---|
GB722263A true GB722263A (en) | 1955-01-19 |
Family
ID=10189204
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB23045/51A Expired GB722263A (en) | 1951-10-03 | 1951-10-03 | Improvements in or relating to loudspeakers having a conical diaphragm |
Country Status (2)
Country | Link |
---|---|
US (1) | US2706529A (en) |
GB (1) | GB722263A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3006508A1 (en) * | 1980-02-21 | 1981-08-27 | Dual Gebrüder Steidinger, 7742 St Georgen | Electro-dynamic loudspeaker with extension core plate - generates improved reproductions by using protective sleeve and partial end cap |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB765184A (en) * | 1954-01-05 | 1957-01-02 | Donald Maynard Chave | Improvements in or relating to loudspeakers |
US3032136A (en) * | 1956-09-27 | 1962-05-01 | Jr Andrew Stewart Hegeman | Loudspeaker |
US3400217A (en) * | 1965-02-08 | 1968-09-03 | Oscar E. Kraut | Method of and means for loudspeaker sound wave distribution |
US7949146B2 (en) * | 2006-06-27 | 2011-05-24 | Mckenzie Mark D | Boundary layer regulator for extended range acoustical transducers |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1636410A (en) * | 1924-04-24 | 1927-07-19 | Fibroc Insulation Company | Telephone diaphragm |
US2124597A (en) * | 1934-01-31 | 1938-07-26 | Rca Corp | Acoustic device |
US2115924A (en) * | 1935-10-05 | 1938-05-03 | Magnavox Co | Acoustic apparatus |
US2271100A (en) * | 1940-12-24 | 1942-01-27 | Ernest H Scott | Sound equalizer reproducer system |
-
1951
- 1951-10-03 GB GB23045/51A patent/GB722263A/en not_active Expired
-
1952
- 1952-09-29 US US312111A patent/US2706529A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3006508A1 (en) * | 1980-02-21 | 1981-08-27 | Dual Gebrüder Steidinger, 7742 St Georgen | Electro-dynamic loudspeaker with extension core plate - generates improved reproductions by using protective sleeve and partial end cap |
Also Published As
Publication number | Publication date |
---|---|
US2706529A (en) | 1955-04-19 |
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