JPS542647Y2 - - Google Patents

Info

Publication number
JPS542647Y2
JPS542647Y2 JP1971015019U JP1501971U JPS542647Y2 JP S542647 Y2 JPS542647 Y2 JP S542647Y2 JP 1971015019 U JP1971015019 U JP 1971015019U JP 1501971 U JP1501971 U JP 1501971U JP S542647 Y2 JPS542647 Y2 JP S542647Y2
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.)
Expired
Application number
JP1971015019U
Other languages
Japanese (ja)
Other versions
JPS4712923U (en
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
Priority to JP1971015019U priority Critical patent/JPS542647Y2/ja
Priority to US232142A priority patent/US3881074A/en
Priority to CA136,421A priority patent/CA982687A/en
Publication of JPS4712923U publication Critical patent/JPS4712923U/ja
Application granted granted Critical
Publication of JPS542647Y2 publication Critical patent/JPS542647Y2/ja
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
    • 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)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
JP1971015019U 1971-03-10 1971-03-10 Expired JPS542647Y2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP1971015019U JPS542647Y2 (en) 1971-03-10 1971-03-10
US232142A US3881074A (en) 1971-03-10 1972-03-06 Electro-acoustic transducer
CA136,421A CA982687A (en) 1971-03-10 1972-03-07 Electro-acoustic transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1971015019U JPS542647Y2 (en) 1971-03-10 1971-03-10

Publications (2)

Publication Number Publication Date
JPS4712923U JPS4712923U (en) 1972-10-16
JPS542647Y2 true JPS542647Y2 (en) 1979-02-05

Family

ID=27863963

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1971015019U Expired JPS542647Y2 (en) 1971-03-10 1971-03-10

Country Status (3)

Country Link
US (1) US3881074A (en)
JP (1) JPS542647Y2 (en)
CA (1) CA982687A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4295011A (en) * 1979-09-11 1981-10-13 Epicure Products Inc. Linear excursion-constant inductance loudspeaker
US4421956A (en) * 1981-09-29 1983-12-20 Peavey Electronics Corp. Loud speaker with minimized magnetic leakage
DE3267630D1 (en) * 1981-12-24 1986-01-02 Eckehard Kort Magnetic system with annular air-gap, in particular for woofers
ATE51994T1 (en) * 1985-07-17 1990-04-15 Studer Willi Ag MAGNETIC SYSTEM FOR A DYNAMIC LOUDSPEAKER.
DE69329925T2 (en) * 1992-11-18 2001-05-31 Matsushita Electric Ind Co Ltd Television receiver
US5381483A (en) * 1993-04-05 1995-01-10 Commonwealth Of Puerto Rico Minimal inductance electrodynamic transducer
DE69535513T2 (en) * 1995-04-18 2007-10-04 Harman International Industries, Incorporated, Northridge COIL PAIR DRIVE WITH MULTIPURPOSE HOUSING
US6768806B1 (en) 1998-03-19 2004-07-27 Harman International Industries, Incorporated Shorting rings in dual-coil dual-gap loudspeaker drivers
CN1152601C (en) * 1998-03-19 2004-06-02 Jbl公司 Shorting rings in dual-coil dual-gap loudspeaker drivers
FR2799919B1 (en) * 1999-10-19 2002-10-11 Sagem PERMANENT MAGNET ACTUATOR AND DRIVE ELECTRICAL COIL, ESPECIALLY MOBILE PHONE SPEAKER
US6774510B1 (en) * 2000-10-25 2004-08-10 Harman International Industries, Inc. Electromagnetic motor with flux stabilization ring, saturation tips, and radiator
JP3752674B2 (en) * 2002-08-28 2006-03-08 ミネベア株式会社 Magnetic circuit for speakers
US10280348B2 (en) 2017-01-31 2019-05-07 Prc-Desoto International, Inc. Low density aerospace compositions and sealants
CN208821073U (en) * 2018-10-15 2019-05-03 苏州上声电子股份有限公司 A kind of magnetic circuit of loudspeaker and loudspeaker
CN113557752B (en) * 2019-02-28 2023-06-23 普立菲有限公司 Speaker motor with improved linearity

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1953542A (en) * 1929-08-06 1934-04-03 Magnavox Co Sound reproducing device
US3079472A (en) * 1960-10-06 1963-02-26 Rca Corp Magnetic field structure for transducers and method of constructing same
US3413579A (en) * 1966-03-14 1968-11-26 Westinghouse Electric Corp Magnetic field assembly for electro-mechanical transducers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LOUD SPEAKERS=1958 *

Also Published As

Publication number Publication date
JPS4712923U (en) 1972-10-16
CA982687A (en) 1976-01-27
US3881074A (en) 1975-04-29

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