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FR1019894A - Aimant permanent pour haut-parleur - Google Patents

Aimant permanent pour haut-parleur

Info

Publication number
FR1019894A
FR1019894A FR1019894DA FR1019894A FR 1019894 A FR1019894 A FR 1019894A FR 1019894D A FR1019894D A FR 1019894DA FR 1019894 A FR1019894 A FR 1019894A
Authority
FR
France
Prior art keywords
speaker
permanent magnet
permanent
magnet
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
Application number
Other languages
English (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.)
ROLA Co
Original Assignee
ROLA Co
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 ROLA Co filed Critical ROLA Co
Application granted granted Critical
Publication of FR1019894A publication Critical patent/FR1019894A/fr
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)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
FR1019894D 1950-06-01 1950-06-09 Aimant permanent pour haut-parleur Expired FR1019894A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB13777/50A GB672465A (en) 1950-06-01 1950-06-01 Permanent magnet structure for a loudspeaker

Publications (1)

Publication Number Publication Date
FR1019894A true FR1019894A (fr) 1953-01-27

Family

ID=10029174

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1019894D Expired FR1019894A (fr) 1950-06-01 1950-06-09 Aimant permanent pour haut-parleur

Country Status (3)

Country Link
US (2) US2517727A (fr)
FR (1) FR1019894A (fr)
GB (1) GB672465A (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2974204A (en) * 1954-07-06 1961-03-07 Kane Corp Du Transducer
US2964597A (en) * 1954-12-10 1960-12-13 Rca Corp Loudspeaker magnetic field structure
USRE26030E (en) * 1956-02-28 1966-05-24 Dynamic transducer
US4327257A (en) * 1979-09-10 1982-04-27 Schwartz Leslie H Alignment device for electro-acoustical transducers
US6963652B1 (en) 2003-04-18 2005-11-08 James M Colombo Low frequency generator
FR2865608B1 (fr) * 2004-01-23 2007-02-09 Robert Rigondeau Transducteur electoacoustique et enceinte le comportant
US20070242849A1 (en) * 2006-04-13 2007-10-18 Galax Multimedia Co., Ltd. Loudspeaker with high power efficiency and low resonance frequency
US7675202B1 (en) 2007-07-18 2010-03-09 Benjamin Huang Isotropic ring magnet linear voice coil motor
US9699565B2 (en) * 2014-12-07 2017-07-04 Cardas Audio Ltd. Loudspeaker using contour field hard magnet poles and yoke construction

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB297183A (en) * 1927-07-21 1928-09-20 British Thomson Houston Co Ltd Improvements relating to devices for the interconversion of electrical and mechanical vibrations, such as loud-speakers
US1955248A (en) * 1928-04-18 1934-04-17 Messick Charies Magnetic movement
US1918164A (en) * 1929-09-10 1933-07-11 William L Woolf Acoustic device
BE414989A (fr) * 1935-04-13
US2458158A (en) * 1942-11-25 1949-01-04 Permoflux Corp Magnetically shielded electrodynamic sound reproducer

Also Published As

Publication number Publication date
US2517727A (en) 1950-08-08
USRE23856E (en) 1954-07-27
GB672465A (en) 1952-05-21

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