FR711055A - Improvements to the speakers - Google Patents

Improvements to the speakers

Info

Publication number
FR711055A
FR711055A FR711055DA FR711055A FR 711055 A FR711055 A FR 711055A FR 711055D A FR711055D A FR 711055DA FR 711055 A FR711055 A FR 711055A
Authority
FR
France
Prior art keywords
speakers
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)
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR711055A publication Critical patent/FR711055A/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
    • H04R9/06—Loudspeakers
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
FR711055D 1930-08-14 1931-02-12 Improvements to the speakers Expired FR711055A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US475233A US1866361A (en) 1930-08-14 1930-08-14 Driving unit for loud-speakers

Publications (1)

Publication Number Publication Date
FR711055A true FR711055A (en) 1931-09-02

Family

ID=23886746

Family Applications (1)

Application Number Title Priority Date Filing Date
FR711055D Expired FR711055A (en) 1930-08-14 1931-02-12 Improvements to the speakers

Country Status (3)

Country Link
US (1) US1866361A (en)
DE (1) DE623800C (en)
FR (1) FR711055A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2429068A (en) * 1945-01-01 1947-10-14 Gen Electric Double disc eddy current loud-speaker
US2621261A (en) * 1949-04-21 1952-12-09 Ericsson Telefon Ab L M Electroacoustic converter
US2927227A (en) * 1955-05-16 1960-03-01 Atvidabergs Ind Ab Electrodynamic driving devices and recording apparatus incorporating such devices
DE1280324B (en) * 1965-02-17 1968-10-17 Paul Mauz Dynamic electro-acoustic converter

Also Published As

Publication number Publication date
US1866361A (en) 1932-07-05
DE623800C (en)

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