EP0065882A3 - Radiating domes for loudspeakers - Google Patents

Radiating domes for loudspeakers Download PDF

Info

Publication number
EP0065882A3
EP0065882A3 EP82302711A EP82302711A EP0065882A3 EP 0065882 A3 EP0065882 A3 EP 0065882A3 EP 82302711 A EP82302711 A EP 82302711A EP 82302711 A EP82302711 A EP 82302711A EP 0065882 A3 EP0065882 A3 EP 0065882A3
Authority
EP
European Patent Office
Prior art keywords
metal
layers
loudspeakers
alloy
radiating
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.)
Withdrawn
Application number
EP82302711A
Other languages
German (de)
French (fr)
Other versions
EP0065882A2 (en
Inventor
Boaz Eliele
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CELESTION INTERNATIONAL Ltd
Original Assignee
CELESTION INTERNATIONAL Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CELESTION INTERNATIONAL Ltd filed Critical CELESTION INTERNATIONAL Ltd
Publication of EP0065882A2 publication Critical patent/EP0065882A2/en
Publication of EP0065882A3 publication Critical patent/EP0065882A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H04R7/127—Non-planar diaphragms or cones dome-shaped

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Laminated Bodies (AREA)

Abstract

A radiating metal dome for use in loudspeakers is made of copper, silver or gold, or of an alloy of one of these metals with additions not sufficient substantially to reduce the thermal conductivity. This ensures good heat dissipation from the coil (14). The dome may comprise a plurality of layers (10, 12), at least one of which is a layer of a metal or a metal alloy, in intimate contact. This sandwich construction enables an improved frequency response characteristic to be achieved. The metal or metal alloy layer or layers may also be provided with one or more layers of a protective material and/or a sound damping material. A non-metallic filler layer (18) may be provided between two layers (10, 12) of metal or metal alloy.
EP82302711A 1981-05-26 1982-05-26 Radiating domes for loudspeakers Withdrawn EP0065882A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8116062 1981-05-26
GB8116062 1981-05-26

Publications (2)

Publication Number Publication Date
EP0065882A2 EP0065882A2 (en) 1982-12-01
EP0065882A3 true EP0065882A3 (en) 1983-12-21

Family

ID=10522061

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82302711A Withdrawn EP0065882A3 (en) 1981-05-26 1982-05-26 Radiating domes for loudspeakers

Country Status (2)

Country Link
EP (1) EP0065882A3 (en)
GB (1) GB2099660A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2155731A (en) * 1983-11-01 1985-09-25 John David Gregson Ultrasonic transducers
GB8603645D0 (en) * 1986-02-14 1986-03-19 Celestion Int Ltd Loudspeakers
DE68921924T3 (en) † 1988-06-02 2002-04-11 Boaz Elieli Electroacoustic transducer and loudspeaker.
JP3021058B2 (en) * 1991-01-14 2000-03-15 パイオニア株式会社 Dome speaker
US5259036A (en) * 1991-07-22 1993-11-02 Shure Brothers, Inc. Diaphragm for dynamic microphones and methods of manufacturing the same
JPH09327087A (en) * 1996-06-06 1997-12-16 Matsushita Electric Ind Co Ltd Double cone speaker
GB2359213B (en) * 1999-10-29 2004-05-19 Kef Audio High frequency transducer
JP2006295245A (en) * 2005-04-05 2006-10-26 Sony Corp Acoustic diaphragm
US7529382B2 (en) * 2006-07-17 2009-05-05 Burton A. Babb High fidelity loudspeaker
CN111031415A (en) * 2019-11-22 2020-04-17 歌尔股份有限公司 Loudspeaker module and electronic device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR653019A (en) * 1928-04-18 1929-03-15 Acoustic membrane
US3991286A (en) * 1975-06-02 1976-11-09 Altec Corporation Heat dissipating device for loudspeaker voice coil
US4135601A (en) * 1975-06-24 1979-01-23 Pioneer Electronic Corporation Boron coated diaphragm for use in a loud speaker
US4140203A (en) * 1976-05-17 1979-02-20 Matsushita Electric Industrial Co., Ltd. Acoustic diaphragm with polyurethane elastomer coating

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR653019A (en) * 1928-04-18 1929-03-15 Acoustic membrane
US3991286A (en) * 1975-06-02 1976-11-09 Altec Corporation Heat dissipating device for loudspeaker voice coil
US4135601A (en) * 1975-06-24 1979-01-23 Pioneer Electronic Corporation Boron coated diaphragm for use in a loud speaker
US4140203A (en) * 1976-05-17 1979-02-20 Matsushita Electric Industrial Co., Ltd. Acoustic diaphragm with polyurethane elastomer coating

Also Published As

Publication number Publication date
EP0065882A2 (en) 1982-12-01
GB2099660A (en) 1982-12-08

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): BE DE FR IT NL SE

PUAL Search report despatched

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AK Designated contracting states

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STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19840822

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ELIELE, BOAZ