JPS4883817A - - Google Patents

Info

Publication number
JPS4883817A
JPS4883817A JP48008011A JP801173A JPS4883817A JP S4883817 A JPS4883817 A JP S4883817A JP 48008011 A JP48008011 A JP 48008011A JP 801173 A JP801173 A JP 801173A JP S4883817 A JPS4883817 A JP S4883817A
Authority
JP
Japan
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.)
Pending
Application number
JP48008011A
Other languages
Japanese (ja)
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 filed Critical
Publication of JPS4883817A publication Critical patent/JPS4883817A/ja
Pending 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
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
    • H04R2209/022—Aspects regarding the stray flux internal or external to the magnetic circuit, e.g. shielding, shape of magnetic circuit, flux compensation coils

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
JP48008011A 1972-01-21 1973-01-19 Pending JPS4883817A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21971872A 1972-01-21 1972-01-21

Publications (1)

Publication Number Publication Date
JPS4883817A true JPS4883817A (en) 1973-11-08

Family

ID=22820492

Family Applications (1)

Application Number Title Priority Date Filing Date
JP48008011A Pending JPS4883817A (en) 1972-01-21 1973-01-19

Country Status (9)

Country Link
US (1) US3763334A (en)
JP (1) JPS4883817A (en)
BE (1) BE794025A (en)
DE (1) DE2302385A1 (en)
ES (1) ES410589A1 (en)
FR (1) FR2168575B1 (en)
GB (1) GB1409789A (en)
IT (1) IT978181B (en)
NL (1) NL7217774A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4451811A (en) * 1979-07-30 1984-05-29 Litton Systems, Inc. Magnet structure
US4645960A (en) * 1979-07-30 1987-02-24 Litton Systems, Inc. Ferro-fluid bearing
US4878560A (en) * 1989-03-16 1989-11-07 Scott Robert T Earmold
NO167699C (en) * 1989-05-16 1991-11-27 Infrawave Tech As ELECTROMECHANICAL TRANSDUCES FOR LOW-FREQUENCY VIBRATIONS.
SK307792A3 (en) * 1991-03-13 1994-04-06 Teves Gmbh Alfred Double-tube shock absorber
EP0624049B1 (en) * 1993-04-28 2002-06-12 Matsushita Electric Industrial Co., Ltd. A loudspeaker apparatus
DE29512102U1 (en) * 1995-07-27 1995-10-05 Nokia (Deutschland) Gmbh, 75175 Pforzheim Magnet system
DE19616794B4 (en) * 1996-04-26 2005-09-29 Harman Audio Electronic Systems Gmbh speaker
DE10215364B4 (en) * 2002-04-08 2004-05-27 Harman/Becker Automotive Systems Gmbh (Straubing Division) Drive arrangement for a loudspeaker
DE10232643A1 (en) * 2002-07-18 2004-02-12 Harman/Becker Automotive Systems Gmbh (Straubing Division) Actuating structure for a loudspeaker has an arrangement of magnets with an actuating magnet, a pole core and a pole shank as well as an air gap
FR2960738B1 (en) * 2010-05-28 2015-09-25 Focal Jmlab ACOUSTIC SPEAKER

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2293078A (en) * 1939-12-05 1942-08-18 B A Proctor Company Inc Microphone
US2860721A (en) * 1954-03-24 1958-11-18 Fauthal A Hassan Sound reproducing device
DE971442C (en) * 1954-08-29 1959-01-29 Standard Elek K Lorenz Ag Dynamic speaker
USRE26030E (en) * 1956-02-28 1966-05-24 Dynamic transducer
US3046362A (en) * 1956-11-06 1962-07-24 Stanley F White Speaker
US2923783A (en) * 1957-06-17 1960-02-02 Stanley F White Electro-acoustical transducer
US3413579A (en) * 1966-03-14 1968-11-26 Westinghouse Electric Corp Magnetic field assembly for electro-mechanical transducers

Also Published As

Publication number Publication date
GB1409789A (en) 1975-10-15
NL7217774A (en) 1973-07-24
US3763334A (en) 1973-10-02
DE2302385A1 (en) 1973-07-26
FR2168575A1 (en) 1973-08-31
ES410589A1 (en) 1975-12-16
BE794025A (en) 1973-05-02
FR2168575B1 (en) 1977-02-04
IT978181B (en) 1974-09-20

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