GB1500199A - Direct radiator loudspeaker systems - Google Patents
Direct radiator loudspeaker systemsInfo
- Publication number
- GB1500199A GB1500199A GB823775A GB823775A GB1500199A GB 1500199 A GB1500199 A GB 1500199A GB 823775 A GB823775 A GB 823775A GB 823775 A GB823775 A GB 823775A GB 1500199 A GB1500199 A GB 1500199A
- Authority
- GB
- United Kingdom
- Prior art keywords
- loud
- wall
- speaker
- enclosure
- walls
- 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
- 230000005855 radiation Effects 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
-
- 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
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/323—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for loudspeakers
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
1500199 Loud-speakers ALLISON ACOUSTICS Inc 27 Feb 1975 [1 March 1974] 8237/75 Headings H4S and H4X A loud-speaker system 10 (Fig. 1A) comprises an enclosure having a closed rear wall 16 for placement against a room boundary wall 28 and side walls 14 extending from the rear wall 16. A low frequency loud-speaker 24 is mounted on a side wall 14, the included angle between the walls 14 and 16 being not greater than 90 degrees. The distance from the centre of the bass loud-speaker 24 to the rear edge of the side wall 14 and to a second edge of the wall 14 adjacent the rear edge is not more than half the smallest outside dimension of the side wall 14. The loud-speaker 24 is of cone type and has an effective frequency range the upper limit of which is substantially equal to, but not greater than, that frequency above which the mounting panel reduces the effective radiation angle of the cone loud-speaker and whose wavelength is equal to twice the minimum outside dimension of the mounting panel. Middle and high frequency loud-speakers 20 and 22 are flush mounted on front wall 12 for good distribution of sound into the room. The loud-speaker system 10 rests on a table 11 near the edge 30 formed by wall and floor. When the system is placed adjacent one, two or three boundary walls (e.g. room walls, floor) a relatively flat frequency response is obtained and acoustic power output is enhanced. Thus the loudspeaker system 10 may be placed on the floor 26 near the wall 28 (Fig. 1B, not shown). In another arrangement (Fig. 2) low frequency loud-speaker 24 is mounted on the top wall 18 of an enclosure 10 supported on a shelf 27 in the corner of a room. Alternatively two low frequency loudspeakers 24 (Fig. 3) driven in phase are mounted on side walls 14a of an enclosure 10 having a rear wall 32. The path length B, along the outside of the enclosure, between the centres C of the two loudspeakers 24 is not greater than about the minimum outside dimension of the panels 14a.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US44706574A | 1974-03-01 | 1974-03-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1500199A true GB1500199A (en) | 1978-02-08 |
Family
ID=23774870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB823775A Expired GB1500199A (en) | 1974-03-01 | 1975-02-27 | Direct radiator loudspeaker systems |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS601798B2 (en) |
| BE (1) | BE825962A (en) |
| CA (1) | CA1012895A (en) |
| CH (1) | CH591198A5 (en) |
| DE (1) | DE2507377A1 (en) |
| ES (1) | ES435177A1 (en) |
| FR (1) | FR2262893B1 (en) |
| GB (1) | GB1500199A (en) |
| IT (1) | IT1030246B (en) |
| NL (1) | NL7502223A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103796129A (en) * | 2012-11-05 | 2014-05-14 | 曾山 | Coaxial-line array sound box |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55144475U (en) * | 1979-04-02 | 1980-10-16 | ||
| CN104113800B (en) * | 2014-07-25 | 2018-07-27 | 无锡杰夫电声股份有限公司 | Dumbbell type reflex cabinet with high pitch compensation |
-
1975
- 1975-02-20 DE DE19752507377 patent/DE2507377A1/en not_active Withdrawn
- 1975-02-24 CA CA220,644A patent/CA1012895A/en not_active Expired
- 1975-02-25 NL NL7502223A patent/NL7502223A/en not_active Application Discontinuation
- 1975-02-25 BE BE153723A patent/BE825962A/en not_active IP Right Cessation
- 1975-02-25 FR FR7505835A patent/FR2262893B1/fr not_active Expired
- 1975-02-27 GB GB823775A patent/GB1500199A/en not_active Expired
- 1975-02-28 CH CH257575A patent/CH591198A5/xx not_active IP Right Cessation
- 1975-02-28 JP JP2494775A patent/JPS601798B2/en not_active Expired
- 1975-02-28 IT IT6752375A patent/IT1030246B/en active
- 1975-02-28 ES ES435177A patent/ES435177A1/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103796129A (en) * | 2012-11-05 | 2014-05-14 | 曾山 | Coaxial-line array sound box |
Also Published As
| Publication number | Publication date |
|---|---|
| CA1012895A (en) | 1977-06-28 |
| BE825962A (en) | 1975-06-16 |
| JPS601798B2 (en) | 1985-01-17 |
| ES435177A1 (en) | 1976-12-01 |
| IT1030246B (en) | 1979-03-30 |
| CH591198A5 (en) | 1977-09-15 |
| AU7827275A (en) | 1976-08-19 |
| JPS50122925A (en) | 1975-09-26 |
| NL7502223A (en) | 1975-09-03 |
| FR2262893B1 (en) | 1982-10-01 |
| FR2262893A1 (en) | 1975-09-26 |
| DE2507377A1 (en) | 1975-09-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |