CA1339519C - Loudspeaker - Google Patents

Loudspeaker

Info

Publication number
CA1339519C
CA1339519C CA000598852A CA598852A CA1339519C CA 1339519 C CA1339519 C CA 1339519C CA 000598852 A CA000598852 A CA 000598852A CA 598852 A CA598852 A CA 598852A CA 1339519 C CA1339519 C CA 1339519C
Authority
CA
Canada
Prior art keywords
diaphragm
low frequency
high frequency
voice coil
magnetic
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 - Fee Related
Application number
CA000598852A
Other languages
English (en)
French (fr)
Inventor
Lawrence Reginald Fincham
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.)
KH Technology Corp
Original Assignee
KEF Electronics 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10636585&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA1339519(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by KEF Electronics Ltd filed Critical KEF Electronics Ltd
Application granted granted Critical
Publication of CA1339519C publication Critical patent/CA1339519C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • 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 
    • H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively 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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Liquid Crystal (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
CA000598852A 1988-05-09 1989-05-05 Loudspeaker Expired - Fee Related CA1339519C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8810943 1988-05-09
GB888810943A GB8810943D0 (en) 1988-05-09 1988-05-09 Loudspeaker

Publications (1)

Publication Number Publication Date
CA1339519C true CA1339519C (en) 1997-10-28

Family

ID=10636585

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000598852A Expired - Fee Related CA1339519C (en) 1988-05-09 1989-05-05 Loudspeaker

Country Status (12)

Country Link
EP (1) EP0341926B2 (de)
JP (1) JP2766862B2 (de)
KR (1) KR0171567B1 (de)
AT (1) ATE115352T1 (de)
AU (1) AU3558189A (de)
CA (1) CA1339519C (de)
DE (1) DE68919746T3 (de)
ES (1) ES2065988T3 (de)
GB (2) GB8810943D0 (de)
HK (1) HK71893A (de)
NZ (1) NZ229054A (de)
WO (1) WO1989011201A1 (de)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0574387A1 (de) * 1990-10-09 1993-12-22 Stage Ac-Company B.V. Elektrodynamischer lautsprecher mit kühlanordnung
WO1992007449A1 (en) * 1990-10-17 1992-04-30 Canon Research Centre Europe Ltd Sound output device
IT1258008B (it) * 1992-01-14 1996-02-20 Trasduttore elettroacustico composito per la riproduzione delle frequenze medio-alte
DE4225156A1 (de) * 1992-07-30 1994-02-03 Nokia Deutschland Gmbh Magnetsystem für elektroakustische Wandler
DE4234069A1 (de) * 1992-10-09 1994-04-14 Nokia Deutschland Gmbh Konuslautsprecher in Leichtbauweise
DE29512102U1 (de) * 1995-07-27 1995-10-05 Nokia (Deutschland) Gmbh, 75175 Pforzheim Magnetsystem
GB2359213B (en) * 1999-10-29 2004-05-19 Kef Audio High frequency transducer
CA2352732A1 (en) * 2000-07-11 2002-01-11 Philip Jeffrey Anthony Compound loudspeaker drive unit having a magnet system
GB2364847B (en) * 2000-07-11 2004-10-13 Kef Audio Compound loudspeaker having a magnet system
GB2368484B (en) * 2000-10-25 2004-06-16 B & W Loudspeakers Distributed mode panel type loudspeakers
CN1311712C (zh) * 2000-12-26 2007-04-18 安德斯·萨格伦 同心共平面的多频带电－声转换器
ITVI20030041A1 (it) * 2003-03-03 2004-09-04 Alessandro Riccobono Diffusore acustico a colonna.
AU2008352372B2 (en) * 2008-03-05 2013-12-19 Genelec Oy Nested compound loudspeaker drive unit
DE102008049560B3 (de) * 2008-09-30 2010-07-01 Kuhnke Automotive Gmbh & Co. Kg Elektrischer Schwingungserreger
GB2471884A (en) 2009-07-17 2011-01-19 Gp Acoustics Loudspeaker driver surround with at least one stiffening tab
RU2012106653A (ru) * 2009-07-24 2013-08-27 Конинклейке Филипс Электроникс Н.В. Система воспроизведения звука
GB2474853B (en) 2009-10-27 2014-01-01 Gp Acoustics Uk Ltd Loudspeakers
FR2955446B1 (fr) * 2010-01-15 2015-06-05 Phl Audio Transducteur electrodynamique a dome et suspension flottante
FR2955444B1 (fr) * 2010-01-15 2012-08-03 Phl Audio Systeme de haut-parleur coaxial a chambre de compression
FR2955445B1 (fr) * 2010-01-15 2013-06-07 Phl Audio Transducteur electrodynamique a dome et suspension interne
FR2955447B1 (fr) * 2010-01-15 2012-08-03 Phl Audio Transducteur electrodynamique comprenant un guide d'ondes acoustiques assurant une dissipation thermique
CN110830891B (zh) * 2018-08-07 2021-05-07 深圳市宝业恒实业股份有限公司 一种大功率自分频全频扬声器

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB665815A (en) * 1945-01-02 1952-01-30 Marconi Wireless Telegraph Co Improvements in sound reproducing devices
FR1001734A (fr) * 1946-08-13 1952-02-27 Subalpine Apparecchiature Elet Haut-parleur à large bande de fréquences et à double système vibrant
JPS5353543A (en) * 1976-10-27 1978-05-16 Nippon Kokan Kk Welding process for tubes
DE2833202A1 (de) * 1978-07-27 1980-02-14 Schering Ag Neue indanyl- und tetralinylamide, verfahren zu ihrer herstellung und diese enthaltende pharmazeutische praeparate
US4492826A (en) * 1982-08-10 1985-01-08 R&C Chiu International, Inc. Loudspeaker
JPS59164390U (ja) * 1983-04-15 1984-11-05 株式会社　双信音響製作所 同軸型複合スピ−カ
GB8402229D0 (en) * 1984-01-27 1984-02-29 Tannoy Ltd Moving coil loudspeaker
MX161230A (es) * 1985-12-23 1990-08-24 Unique Mobility Inc Mejoras en transductor electromagnetico de peso ligero

Also Published As

Publication number Publication date
GB2236929B (en) 1992-11-04
GB2236929A (en) 1991-04-17
KR0171567B1 (ko) 1999-03-30
EP0341926A1 (de) 1989-11-15
GB8810943D0 (en) 1988-06-15
DE68919746D1 (de) 1995-01-19
EP0341926B2 (de) 2001-02-07
AU3558189A (en) 1989-11-29
NZ229054A (en) 1992-03-26
KR900702744A (ko) 1990-12-08
ATE115352T1 (de) 1994-12-15
JP2766862B2 (ja) 1998-06-18
ES2065988T3 (es) 1995-03-01
DE68919746T3 (de) 2001-06-13
GB9023490D0 (en) 1991-01-09
JPH03504310A (ja) 1991-09-19
EP0341926B1 (de) 1994-12-07
DE68919746T2 (de) 1995-04-20
WO1989011201A1 (en) 1989-11-16
HK71893A (en) 1993-07-30

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Legal Events

Date Code Title Description
MKLA Lapsed

Effective date: 20141028