BE479149A - - Google Patents

Info

Publication number
BE479149A
BE479149A BE479149DA BE479149A BE 479149 A BE479149 A BE 479149A BE 479149D A BE479149D A BE 479149DA BE 479149 A BE479149 A BE 479149A
Authority
BE
Belgium
Application number
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.)
Publication of BE479149A publication Critical patent/BE479149A/xx

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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
BE479149D 1943-01-07 BE479149A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US471576A US2371951A (en) 1943-01-07 1943-01-07 Double diaphragm loud-speaker

Publications (1)

Publication Number Publication Date
BE479149A true BE479149A (zh)

Family

ID=23872155

Family Applications (1)

Application Number Title Priority Date Filing Date
BE479149D BE479149A (zh) 1943-01-07

Country Status (2)

Country Link
US (1) US2371951A (zh)
BE (1) BE479149A (zh)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2565069A (en) * 1946-03-30 1951-08-21 Rola Company Inc Loud-speaker of the double diaphragm type
US2568883A (en) * 1947-03-24 1951-09-25 Altec Lansing Corp Loud-speaker with expanding horn unit
US2590439A (en) * 1948-05-12 1952-03-25 Star Electronics Inc Push-pull resistance type phonograph pickup
US2775653A (en) * 1950-11-16 1956-12-25 Holmberg & Co Moving coil diaphragms for electrodynamic listening apparatus
US3236958A (en) * 1961-04-25 1966-02-22 Electronic Res Associates Inc Loudspeaker system
US3350513A (en) * 1964-06-22 1967-10-31 Alfred H Roberts Cone loudspeakers
DE3603537A1 (de) * 1986-02-05 1987-08-06 Pfleid Wohnraumakustik Gmbh Breitbandlautsprecher
ES292736Y (es) * 1986-03-05 1987-03-01 Plastmetal, S.A. Altavoz dinamico para alarmas perfeccionado
USD943551S1 (en) * 2019-05-23 2022-02-15 Tymphany Acoustic Technology (Huizhou) Co., Ltd. Diaphragm for loudspeaker
US11553272B2 (en) 2020-09-30 2023-01-10 Paradigm Electronics Inc. Loudspeaker with mechanical resonance mitigation

Also Published As

Publication number Publication date
US2371951A (en) 1945-03-20

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