GB1363759A - Loudspeaker apparatus - Google Patents
Loudspeaker apparatusInfo
- Publication number
- GB1363759A GB1363759A GB5151071A GB5151071A GB1363759A GB 1363759 A GB1363759 A GB 1363759A GB 5151071 A GB5151071 A GB 5151071A GB 5151071 A GB5151071 A GB 5151071A GB 1363759 A GB1363759 A GB 1363759A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- air space
- diaphragms
- low
- higher frequency
- 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
- 241000291281 Micropterus treculii Species 0.000 abstract 1
- 230000003321 amplification Effects 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- 238000003199 nucleic acid amplification method 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
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/283—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm
- H04R1/2834—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm for loudspeaker transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
Abstract
1363759 Loud-speakers FASER-UNDKUNSTSTOFF-PRESSWERK ROMEN KG 5 Nov 1971 [25 Nov 1970] 51510/71 Heading H4J A loud-speaker comprises a low-frequency, e.g. bass, diaphragm which is driven via an enclosed air space by a second diaphragm driven directly by vibratory energizing means and which is intended to cover the range of frequencies above that of the first diaphragm. In a coaxial arrangement of conical diaphragms (Fig. 1) the low and the higher frequency diaphragms 1, 2 are flexibly supported by a chassis 6, and the higher frequency diaphragm 2 is driven via a moving coil arrangement situated in an enclosed air space bounded by parts of diaphragms 1, 2, chassis 6 and bellows 8, 10. The area of the low-frequency diaphragm 1 bounding the air space is made smaller than the corresponding area of diaphragm 2 so that vibration amplitude amplification takes place at the low frequencies transmitted by the air space. The moving coil arrangement may be housed within the cone 2 instead of in the air space (Fig. 2, not shown). In a composite diaphragm (Fig. 3) chassis 22, 23 flexibly supports lowfrequency diaphragm 26, 20 which in turn flexibly supports higher frequency diaphragm 17. In a further arrangement (Fig. 5) the diaphragms are separately mounted and area coupled by an air pipe 31. The enclosed air spaces may be connected to the atmosphere via a small aperture to allow for changes in atmospheric pressure. More than one lowfrequency diaphragm, each having a different resonance frequency, may be coupled by the enclosed air space to the higher frequency diaphragm.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2057905 | 1970-11-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1363759A true GB1363759A (en) | 1974-08-14 |
Family
ID=5789040
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5151071A Expired GB1363759A (en) | 1970-11-25 | 1971-11-05 | Loudspeaker apparatus |
Country Status (5)
Country | Link |
---|---|
US (1) | US3772466A (en) |
DE (1) | DE2057905B1 (en) |
FR (1) | FR2115331A1 (en) |
GB (1) | GB1363759A (en) |
IT (1) | IT942887B (en) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4076097A (en) * | 1976-08-04 | 1978-02-28 | Thomas Lowe Clarke | Augmented passive radiator loudspeaker |
US4176253A (en) * | 1977-05-20 | 1979-11-27 | Gabr Saad Z M | Current loaded pneumatically driven loudspeaker arrangements |
US4286688A (en) * | 1978-05-09 | 1981-09-01 | Malley Arthur L O | Loudspeaker apparatus |
AU538247B2 (en) * | 1979-11-09 | 1984-08-02 | Matsushita Electric Industrial Co., Ltd. | Speaker and speaker system |
US4301332A (en) * | 1980-01-08 | 1981-11-17 | Norman Dusanek | Woofer loudspeaker |
DE3603537A1 (en) * | 1986-02-05 | 1987-08-06 | Pfleid Wohnraumakustik Gmbh | BROADBAND SPEAKER |
EP0333133B1 (en) * | 1988-03-16 | 1994-06-08 | Sanyo Electric Co., Ltd. | Speaker system |
DE3929266C1 (en) * | 1989-09-02 | 1991-01-03 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | |
WO1993007729A1 (en) * | 1991-10-02 | 1993-04-15 | Noise Cancellation Technologies, Inc. | Vacuum speaker |
US5319938A (en) * | 1992-05-11 | 1994-06-14 | Macrosonix Corp. | Acoustic resonator having mode-alignment-canceled harmonics |
JP3494711B2 (en) * | 1994-09-05 | 2004-02-09 | パイオニア株式会社 | Speaker device for reproducing high-pitched sound and method of manufacturing the same |
UA41484C2 (en) * | 1997-01-09 | 2001-09-17 | Нью Транзд'Юсез Лімітед | Loudspeaker |
DE19710967C1 (en) * | 1997-03-17 | 1998-10-22 | Karl Heinz Koeppen | Full range speakers |
US6343128B1 (en) | 1999-02-17 | 2002-01-29 | C. Ronald Coffin | Dual cone loudspeaker |
US6704426B2 (en) | 1999-03-02 | 2004-03-09 | American Technology Corporation | Loudspeaker system |
US6169811B1 (en) | 1999-03-02 | 2001-01-02 | American Technology Corporation | Bandpass loudspeaker system |
ATE246434T1 (en) * | 1999-05-07 | 2003-08-15 | Gsbs Dev Corp | SOUND BODY FOR FIRE ALARM SYSTEMS |
US6466676B2 (en) | 2000-02-09 | 2002-10-15 | C. Ronald Coffin | Compound driver for acoustical applications |
EP1732351A1 (en) * | 2005-06-09 | 2006-12-13 | TCL Thomson Electronics Europe SAS | Acoustic enclosure and corresponding device |
WO2012051217A2 (en) | 2010-10-12 | 2012-04-19 | Sahyoun Joseph Y | An acoustic radiator including a combinatiion of a co-axial audio speaker and passive radiator |
US9042582B2 (en) * | 2013-01-02 | 2015-05-26 | Plastoform Industries Limited | Coaxial passive radiation monomer |
WO2016011282A1 (en) | 2014-07-16 | 2016-01-21 | Traxxas Lp | On-board audio system for a model vehicle |
USD834111S1 (en) | 2014-10-01 | 2018-11-20 | Traxxas Lp | Transducer mount |
RU2661543C1 (en) * | 2017-04-24 | 2018-07-17 | Лев Самойлович Напах | Loudspeaker composite coaxial diffuser |
US20200202660A1 (en) * | 2018-12-20 | 2020-06-25 | Everi Games, Inc. | Gaming cabinet with haptic feedback device |
JP7421561B2 (en) * | 2019-02-07 | 2024-01-24 | ソノス・マイティ・ホールディングス・ベスローテン・フェンノートシャップ | In-line damper bellows double opposing driver speaker |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1988250A (en) * | 1934-02-17 | 1935-01-15 | Rca Corp | Loud speaker and method of propagating sound |
US2231479A (en) * | 1938-08-24 | 1941-02-11 | Rca Corp | Signal translating apparatus |
US2704185A (en) * | 1952-01-09 | 1955-03-15 | Ernest A Tavares | Pumping system |
US3019849A (en) * | 1959-07-16 | 1962-02-06 | Gen Dynamics Corp | Loudspeaker diaphragm suspension |
US3275758A (en) * | 1962-09-27 | 1966-09-27 | Walter B Udell | Sound reproducing apparatus |
-
1970
- 1970-11-25 DE DE19702057905D patent/DE2057905B1/en active Pending
-
1971
- 1971-11-05 GB GB5151071A patent/GB1363759A/en not_active Expired
- 1971-11-18 IT IT70781/71A patent/IT942887B/en active
- 1971-11-23 FR FR7141777A patent/FR2115331A1/fr not_active Withdrawn
- 1971-11-24 US US00201749A patent/US3772466A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE2057905B1 (en) | 1972-05-25 |
IT942887B (en) | 1973-04-02 |
US3772466A (en) | 1973-11-13 |
FR2115331A1 (en) | 1972-07-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |