GB281634A - Improvements in or connected with sound reproducers - Google Patents
Improvements in or connected with sound reproducersInfo
- Publication number
- GB281634A GB281634A GB30826/27A GB3082627A GB281634A GB 281634 A GB281634 A GB 281634A GB 30826/27 A GB30826/27 A GB 30826/27A GB 3082627 A GB3082627 A GB 3082627A GB 281634 A GB281634 A GB 281634A
- Authority
- GB
- United Kingdom
- Prior art keywords
- horn
- cone
- type
- speaker
- loud
- 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
- 238000010276 construction Methods 0.000 abstract 2
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 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
- H04R1/26—Spatial arrangements of separate transducers responsive to two or more frequency ranges
Abstract
281,634. De Forest Phonofilms, Ltd., (Assignees of Forest, L. de, and Halpenny, R.). Dec. 1, 1926, [Convention date]. Loud-speakers; magnetic instruments. - A loud - speaker comprises in combination a horn type reproducer and a cone type reproducer, the latter being carried by the former. The horn is preferably of the logarithmic type and associated with a motion picture screen, as described in Specification 277,314. Fig. 1 shows one construction in which the mouth 4 of the horn 2 projects, above the screen 1. An aperture 5 in the bell portion of the horn has mounted in alignment. therewith a cone speaker unit, which is preferably of the moving coil type and comprises a cone 11 and casing 6 mounted on brackets 7, 8. Instead of being mounted directly on the bell portion as shown, the cone speaker may be mounted adjacent thereto. In the modification, Fig. 2, a baffle plate 12 is provided across the central portion of the mouth 4 of the horn, the baffle having a central aperture 13 and perferably forming the front wall of a casing 14 within which the cone speaker 6, 11 is mounted. Both the above constructions may be modified so as to use a straight horn.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US151857A US1785377A (en) | 1926-12-01 | 1926-12-01 | Loud-speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB281634A true GB281634A (en) | 1928-03-08 |
Family
ID=22540515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30826/27A Expired GB281634A (en) | 1926-12-01 | 1927-11-16 | Improvements in or connected with sound reproducers |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1785377A (en) |
| GB (1) | GB281634A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2692331A (en) * | 1952-12-05 | 1954-10-19 | John B Brady | Radio receiving and sound reproducing apparatus |
| US4174019A (en) * | 1978-03-20 | 1979-11-13 | Kramer Justin A | Dual speaker |
| JP2011501579A (en) * | 2007-10-22 | 2011-01-06 | デイビッド マエシバ， | Acoustic system |
-
1926
- 1926-12-01 US US151857A patent/US1785377A/en not_active Expired - Lifetime
-
1927
- 1927-11-16 GB GB30826/27A patent/GB281634A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1785377A (en) | 1930-12-16 |
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