GB386477A - Improvements in or relating to loud speakers - Google Patents

Improvements in or relating to loud speakers

Info

Publication number
GB386477A
GB386477A GB800032A GB800032A GB386477A GB 386477 A GB386477 A GB 386477A GB 800032 A GB800032 A GB 800032A GB 800032 A GB800032 A GB 800032A GB 386477 A GB386477 A GB 386477A
Authority
GB
United Kingdom
Prior art keywords
sections
section
diaphragm
compliant coupling
whilst
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
GB800032A
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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
Priority to US462641A priority Critical patent/US1876831A/en
Application filed by RCA Corp, Radio Corporation of America filed Critical RCA Corp
Priority to GB800032A priority patent/GB386477A/en
Publication of GB386477A publication Critical patent/GB386477A/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
    • H04R7/02—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
    • 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
    • H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

386,477. Diaphragms. MARCONI'S S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.-(Radio Corporation of America ; 570, Lexington Avenue, New York, U.S.A.) March 17, 1932, No. 8000. [Class 40 (iv).] A diaphragm for a hornless loud-speaker comprises a number of sections 3, 4 interconnected by compliant coupling means in the form of shallow corrugations 5, the rigidity of which is designed so that both sections vibrate as a whole for low frequencies whilst at higher frequencies the section 3 alone vibrates. The actuating means, which is shown as a moving coil 2, is connected to the inner section 3 whilst the outer edge of section 4 is connected to the frame 6 by the compliant coupling 7. Modifications are described in which the diaphragm is composed of a number of flat sections or of more than two frusto-conical sections connected to each other by a single corrugation. Fig. 4 shows a further modification in which the compliant coupling means connecting the diaphragm portions 23, 24 is constituted by radial strips 26 separated by circumferential slots 22 which may, if desired, be closed by a thin strip 27 of leather, paper, rubber, &c. Further, the outer section 24, or, if desired, both sections may be provided with corrugations 28.
GB800032A 1930-06-20 1932-03-17 Improvements in or relating to loud speakers Expired GB386477A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US462641A US1876831A (en) 1930-06-20 1930-06-20 Sound reproducer
GB800032A GB386477A (en) 1932-03-17 1932-03-17 Improvements in or relating to loud speakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB800032A GB386477A (en) 1932-03-17 1932-03-17 Improvements in or relating to loud speakers

Publications (1)

Publication Number Publication Date
GB386477A true GB386477A (en) 1933-01-19

Family

ID=9843855

Family Applications (1)

Application Number Title Priority Date Filing Date
GB800032A Expired GB386477A (en) 1930-06-20 1932-03-17 Improvements in or relating to loud speakers

Country Status (1)

Country Link
GB (1) GB386477A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2810447A (en) * 1955-05-31 1957-10-22 Ford Motor Co Rear seat speaker
EP2506599A3 (en) * 2011-03-28 2014-01-22 Suzhou Sonavox Electronics Co., Ltd. A diaphragm used in a loudspeaker and a loudspeaker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2810447A (en) * 1955-05-31 1957-10-22 Ford Motor Co Rear seat speaker
EP2506599A3 (en) * 2011-03-28 2014-01-22 Suzhou Sonavox Electronics Co., Ltd. A diaphragm used in a loudspeaker and a loudspeaker

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