GB8703315D0 - Cone loudspeakers - Google Patents

Cone loudspeakers

Info

Publication number
GB8703315D0
GB8703315D0 GB878703315A GB8703315A GB8703315D0 GB 8703315 D0 GB8703315 D0 GB 8703315D0 GB 878703315 A GB878703315 A GB 878703315A GB 8703315 A GB8703315 A GB 8703315A GB 8703315 D0 GB8703315 D0 GB 8703315D0
Authority
GB
United Kingdom
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
GB878703315A
Other versions
GB2186761B (en
GB2186761A (en
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 INT Ltd
Original Assignee
CELESTION INT 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 INT Ltd filed Critical CELESTION INT Ltd
Publication of GB8703315D0 publication Critical patent/GB8703315D0/en
Publication of GB2186761A publication Critical patent/GB2186761A/en
Application granted granted Critical
Publication of GB2186761B publication Critical patent/GB2186761B/en
Expired 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.
GB8703315A 1986-02-14 1987-02-13 Cone loudspeakers Expired GB2186761B (en)

Applications Claiming Priority (1)

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

Publications (3)

Publication Number Publication Date
GB8703315D0 true GB8703315D0 (en) 1987-03-18
GB2186761A GB2186761A (en) 1987-08-19
GB2186761B GB2186761B (en) 1989-11-08

Family

ID=10593050

Family Applications (2)

Application Number Title Priority Date Filing Date
GB868603645A Pending GB8603645D0 (en) 1986-02-14 1986-02-14 Loudspeakers
GB8703315A Expired GB2186761B (en) 1986-02-14 1987-02-13 Cone loudspeakers

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB868603645A Pending GB8603645D0 (en) 1986-02-14 1986-02-14 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
DE69431177T2 (en) * 1993-09-22 2003-05-08 Sony Corp., Tokio/Tokyo A 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
CN1839658B (en) * 2003-08-22 2012-08-08 Pss比利时股份有限公司 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
JP4878625B2 (en) * 2006-05-24 2012-02-15 パイオニア株式会社 Speaker device

Family Cites Families (11)

* 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
JPS5634297A (en) * 1979-08-29 1981-04-06 Kenzo Inoue Speaker unit
DE3163565D1 (en) * 1980-02-21 1984-06-20 Wharfedale Ltd Improvements in moving coil loudspeakers
GB2099660A (en) * 1981-05-26 1982-12-08 Celestion Int Ltd Radiating domes for loudspeakers
NL8204839A (en) * 1982-01-04 1983-08-01 Jensen Int Inc ELECTRO-DYNAMIC ACTUATOR FOR A SPEAKER AND ACCOMPANYING MEMBRANE.
US4531608A (en) * 1982-10-29 1985-07-30 Heinz Harro K High frequency compression driver
GB8325298D0 (en) * 1983-09-21 1983-10-26 Tannoy Ltd Direct radiator loudspeaker
GB2160741B (en) * 1984-04-24 1988-04-27 Wharfedale Loudspeaker Moving-coil loudspeaker drive unit

Also Published As

Publication number Publication date
ES2048733T3 (en) 1994-04-01
GB2186761B (en) 1989-11-08
EP0235991A3 (en) 1989-05-24
GB8603645D0 (en) 1986-03-19
CA1292307C (en) 1991-11-19
EP0235991B1 (en) 1993-12-01
ATE98081T1 (en) 1993-12-15
EP0235991A2 (en) 1987-09-09
GB2186761A (en) 1987-08-19
DE3788293D1 (en) 1994-01-13
JPS62248398A (en) 1987-10-29
DE3788293T2 (en) 1994-06-23

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950213