GB848431A - Improvements relating to loudspeakers - Google Patents
Improvements relating to loudspeakersInfo
- Publication number
- GB848431A GB848431A GB3884857A GB3884857A GB848431A GB 848431 A GB848431 A GB 848431A GB 3884857 A GB3884857 A GB 3884857A GB 3884857 A GB3884857 A GB 3884857A GB 848431 A GB848431 A GB 848431A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amplifier
- plate
- loud
- driver unit
- jan
- 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
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
848,431. Loud-speakers. TANNOY Ltd. Jan. 19, 1959 [Dec. 13, 1957; Jan. 10, 1955], Nos. 38848/57 and 1023/58. Class 40 (4). In a moving-coil loud-speaker, at least the output stage of a transistor amplifier is combined with the driver unit to constitute a single unitary component. The invention is described as applied to a re-entrant horn loud-speaker of which the horn 1 is interchangeable by employing the construction described in Specification 703,810. The driver unit 2 includes a domed diaphragm 10 driven by a speech coil (not shown) co-operating with the pole structure 11, and is enclosed in a casing 12 which is continued at 13 to enclose the amplifier 3. The amplifier components are mounted in two groups 14, 15 on a copper plate 16 constituting a partition between the driver unit 2 and the amplifier 3. The plate 16, which acts as a heat sink for the power transistor 17, is cooled by air set in a state of turbulence by the diaphragm 10. To this end the pole structure is held together by a hollow tube 20, as described in Specification 703,809, through which tube the air passes. The plate 16 may be provided with holes or louvres so that the air circulation may extend to the cavity bounded by the plate 16 and the cover 13.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3884857A GB848431A (en) | 1957-12-13 | 1957-12-13 | Improvements relating to loudspeakers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3884857A GB848431A (en) | 1957-12-13 | 1957-12-13 | Improvements relating to loudspeakers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB848431A true GB848431A (en) | 1960-09-14 |
Family
ID=10406062
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3884857A Expired GB848431A (en) | 1957-12-13 | 1957-12-13 | Improvements relating to loudspeakers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB848431A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2315741A1 (en) * | 1975-06-23 | 1977-01-21 | Setton Jack | Loudspeaker housing incorporating amplifier - has power transistors heat sink adjacent housing aperture dimensioned to exploit ventilation stimulated by speaker |
US4550229A (en) * | 1982-09-29 | 1985-10-29 | Hwang Shih M | Trumpet horn speaker |
-
1957
- 1957-12-13 GB GB3884857A patent/GB848431A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2315741A1 (en) * | 1975-06-23 | 1977-01-21 | Setton Jack | Loudspeaker housing incorporating amplifier - has power transistors heat sink adjacent housing aperture dimensioned to exploit ventilation stimulated by speaker |
US4550229A (en) * | 1982-09-29 | 1985-10-29 | Hwang Shih M | Trumpet horn speaker |
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