FR638392A - Loudspeaker without horn - Google Patents

Loudspeaker without horn

Info

Publication number
FR638392A
FR638392A FR638392DA FR638392A FR 638392 A FR638392 A FR 638392A FR 638392D A FR638392D A FR 638392DA FR 638392 A FR638392 A FR 638392A
Authority
FR
France
Prior art keywords
horn
loudspeaker
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.)
IDEAL WERKE GES fur DRATHLOSE
Original Assignee
IDEAL WERKE GES fur DRATHLOSE
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 IDEAL WERKE GES fur DRATHLOSE filed Critical IDEAL WERKE GES fur DRATHLOSE
Application granted granted Critical
Publication of FR638392A publication Critical patent/FR638392A/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
FR638392D 1927-07-06 1927-07-28 Loudspeaker without horn Expired FR638392A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE293414X 1927-07-06

Publications (1)

Publication Number Publication Date
FR638392A true FR638392A (en) 1928-05-23

Family

ID=6079132

Family Applications (1)

Application Number Title Priority Date Filing Date
FR638392D Expired FR638392A (en) 1927-07-06 1927-07-28 Loudspeaker without horn

Country Status (3)

Country Link
BE (1) BE343797A (en)
FR (1) FR638392A (en)
GB (1) GB293414A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2863520A (en) * 1955-03-11 1958-12-09 Gen Dynamics Corp Loudspeaker cone rim treatment
US9277324B2 (en) 2013-12-19 2016-03-01 Apple Inc. Three part membrane speaker

Also Published As

Publication number Publication date
GB293414A (en) 1929-03-04
BE343797A (en)

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