EP0235991A3 - Cone loudspeakers - Google Patents

Cone loudspeakers Download PDF

Info

Publication number
EP0235991A3
EP0235991A3 EP87301271A EP87301271A EP0235991A3 EP 0235991 A3 EP0235991 A3 EP 0235991A3 EP 87301271 A EP87301271 A EP 87301271A EP 87301271 A EP87301271 A EP 87301271A EP 0235991 A3 EP0235991 A3 EP 0235991A3
Authority
EP
European Patent Office
Prior art keywords
dome
cone
stiff
central
cone loudspeakers
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.)
Granted
Application number
EP87301271A
Other versions
EP0235991B1 (en
EP0235991A2 (en
Inventor
Ian Stanley White
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
Priority to AT87301271T priority Critical patent/ATE98081T1/en
Publication of EP0235991A2 publication Critical patent/EP0235991A2/en
Publication of EP0235991A3 publication Critical patent/EP0235991A3/en
Application granted granted Critical
Publication of EP0235991B1 publication Critical patent/EP0235991B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

In a cone loudspeaker having a central dome (14), an annular cone (10) around the dome, and a voice coil (18), the central dome (14) is made mechanically strong and axially stiff and is an acoustic radiator in its own right. The dome (14) is preferably also radially stiff and its radial stiffness may be enhanced by a circumferential reinforcing ring. The dome is preferably hemispherical and may be made of aluminium, titanium or fibre-reinforced plastics materials.
EP87301271A 1986-02-14 1987-02-13 Cone loudspeakers Expired - Lifetime EP0235991B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87301271T ATE98081T1 (en) 1986-02-14 1987-02-13 CONE SPEAKERS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB868603645A GB8603645D0 (en) 1986-02-14 1986-02-14 Loudspeakers
GB8603645 1986-02-14

Publications (3)

Publication Number Publication Date
EP0235991A2 EP0235991A2 (en) 1987-09-09
EP0235991A3 true EP0235991A3 (en) 1989-05-24
EP0235991B1 EP0235991B1 (en) 1993-12-01

Family

ID=10593050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87301271A Expired - Lifetime EP0235991B1 (en) 1986-02-14 1987-02-13 Cone loudspeakers

Country Status (7)

Country Link
EP (1) EP0235991B1 (en)
JP (1) JPS62248398A (en)
AT (1) ATE98081T1 (en)
CA (1) CA1292307C (en)
DE (1) DE3788293T2 (en)
ES (1) ES2048733T3 (en)
GB (2) GB8603645D0 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES292736Y (en) * 1986-03-05 1987-03-01 Plastmetal, S.A. DYNAMIC ALARM SPEAKER PERFECTED
EP0644706B1 (en) * 1993-09-22 2002-08-14 Sony Corporation Horn speaker system
DE4419249A1 (en) * 1994-06-01 1995-12-07 Nokia Deutschland Gmbh speaker
JP3555505B2 (en) * 1999-06-16 2004-08-18 株式会社村田製作所 Speaker
GB2359213B (en) * 1999-10-29 2004-05-19 Kef Audio High frequency transducer
EP1658753B1 (en) * 2003-08-22 2012-05-23 PSS Belgium NV Loudspeaker having a composite diaphragm structure
JP2005168001A (en) * 2003-11-13 2005-06-23 Matsushita Electric Ind Co Ltd Tweeter
WO2005048651A1 (en) * 2003-11-13 2005-05-26 Matsushita Electric Industrial Co., Ltd. Tweeter
US20100177925A1 (en) * 2006-05-24 2010-07-15 Pioneer Corporation Speaker Device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2057224A (en) * 1979-08-29 1981-03-25 Inoue K Loudspeaker diaphragm
GB2113041A (en) * 1982-01-04 1983-07-27 Jensen Int Inc Loudspeaker diaphragm
GB2147174A (en) * 1983-09-21 1985-05-01 Tannoy Ltd Direct radiator loudspeaker
US4531608A (en) * 1982-10-29 1985-07-30 Heinz Harro K High frequency compression driver
EP0160478A2 (en) * 1984-04-24 1985-11-06 Wharfedale Loudspeakers Limited Improved moving-coil loudspeaker unit

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5039925A (en) * 1973-08-15 1975-04-12
JPS51120711A (en) * 1975-04-15 1976-10-22 Hokuto Onkyo Kk Speaker
GB1563511A (en) * 1976-03-19 1980-03-26 Harwood H Diaphragms for electroacoustic transducers
JPS5921881Y2 (en) * 1979-07-13 1984-06-29 日立金属株式会社 magnetic sorter
GB2070390B (en) * 1980-02-21 1985-08-07 Rank Organisation Ltd Loudspeaker diaphragm
GB2099660A (en) * 1981-05-26 1982-12-08 Celestion Int Ltd Radiating domes for loudspeakers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2057224A (en) * 1979-08-29 1981-03-25 Inoue K Loudspeaker diaphragm
GB2113041A (en) * 1982-01-04 1983-07-27 Jensen Int Inc Loudspeaker diaphragm
US4531608A (en) * 1982-10-29 1985-07-30 Heinz Harro K High frequency compression driver
GB2147174A (en) * 1983-09-21 1985-05-01 Tannoy Ltd Direct radiator loudspeaker
EP0160478A2 (en) * 1984-04-24 1985-11-06 Wharfedale Loudspeakers Limited Improved moving-coil loudspeaker unit

Also Published As

Publication number Publication date
GB8603645D0 (en) 1986-03-19
DE3788293D1 (en) 1994-01-13
JPS62248398A (en) 1987-10-29
ES2048733T3 (en) 1994-04-01
DE3788293T2 (en) 1994-06-23
GB2186761B (en) 1989-11-08
GB8703315D0 (en) 1987-03-18
EP0235991B1 (en) 1993-12-01
CA1292307C (en) 1991-11-19
EP0235991A2 (en) 1987-09-09
ATE98081T1 (en) 1993-12-15
GB2186761A (en) 1987-08-19

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