FR749472A - Loud speaker - Google Patents

Loud speaker

Info

Publication number
FR749472A
FR749472A FR749472DA FR749472A FR 749472 A FR749472 A FR 749472A FR 749472D A FR749472D A FR 749472DA FR 749472 A FR749472 A FR 749472A
Authority
FR
France
Prior art keywords
loud speaker
loud
speaker
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
French (fr)
Inventor
Henryk Brzeski
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
Application granted granted Critical
Publication of FR749472A publication Critical patent/FR749472A/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
    • 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
    • H04R2209/021—Reduction of eddy currents in the magnetic circuit of electrodynamic loudspeaker transducer

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
FR749472D 1932-11-09 1933-01-24 Loud speaker Expired FR749472A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1976874X 1932-11-09

Publications (1)

Publication Number Publication Date
FR749472A true FR749472A (en) 1933-07-24

Family

ID=7853775

Family Applications (1)

Application Number Title Priority Date Filing Date
FR749472D Expired FR749472A (en) 1932-11-09 1933-01-24 Loud speaker

Country Status (3)

Country Link
US (1) US1976874A (en)
FR (1) FR749472A (en)
GB (1) GB409433A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2538164A (en) * 1946-07-08 1951-01-16 Pickering Associates Inc Electromagnetic sound reproducer
US2547565A (en) * 1946-09-26 1951-04-03 Wright Zimmerman Inc Speaker having a tubular pot
GB625591A (en) * 1947-03-04 1949-06-30 Paul Gustavus Adolphus Helmuth Improvements in magnets
US2538691A (en) * 1948-07-19 1951-01-16 Richard K Y Kim Voice coil for radio loud-speakers
US2745083A (en) * 1949-07-07 1956-05-08 Benjamin L Snavely Transducer, elements therefor, and methods of assembly thereof
DE1280324B (en) * 1965-02-17 1968-10-17 Paul Mauz Dynamic electro-acoustic converter
US3632904A (en) * 1970-03-24 1972-01-04 Paul Mauz Moving coil loudspeaker with eddy current suppression
JPS5023613B1 (en) * 1970-04-23 1975-08-08
JPS5235294B2 (en) * 1971-12-17 1977-09-08
JPS5234212B2 (en) * 1971-12-17 1977-09-02
GB2137047A (en) * 1983-03-15 1984-09-26 Donald Maynard Chave Moving coil loudspeakers
WO1994016536A1 (en) * 1993-01-06 1994-07-21 Velodyne Acoustics, Inc. Speaker containing dual coil
EP0682849A4 (en) * 1993-02-08 1996-01-17 Aura Systems Inc Double ended field coil actuator.
US5487114A (en) * 1994-02-02 1996-01-23 Dinh; Khanh Magnetless speaker

Also Published As

Publication number Publication date
US1976874A (en) 1934-10-16
GB409433A (en) 1934-05-03

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