GB451178A - Improvements in loud speakers - Google Patents

Improvements in loud speakers

Info

Publication number
GB451178A
GB451178A GB298935A GB298935A GB451178A GB 451178 A GB451178 A GB 451178A GB 298935 A GB298935 A GB 298935A GB 298935 A GB298935 A GB 298935A GB 451178 A GB451178 A GB 451178A
Authority
GB
United Kingdom
Prior art keywords
loud
diaphragm
attached
supported
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
GB298935A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB298935A priority Critical patent/GB451178A/en
Publication of GB451178A publication Critical patent/GB451178A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Road Signs Or Road Markings (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

451,178. Loud-speakers; diaphragms. BIRKBECK, G., 146, Adelaide Road, Hampstead, London. Jan. 29, 1935, No. 2989. [Class 40 (iv)] A diaphragm for a loud-speaker is of a generally conical form and comprises an inner portion 18 of a light, but stiff, material such as thin, light paper, e.g. Bristol board, joined to an outer and larger part 19 of a soft, heavy paper having little elasticity and considerable internal damping. The joint between the parts 18, 19 is formed by overlapping the adjoining edges which are attached by an adhesive to a conical ring 20 of flannel, felt or rubber which minimizes the mutual interaction between the two parts. The diaphragm is supported adjacent the joint by a resilient member, such as a spider 23 secured to lugs 24 on the chassis 10 of the loud-speaker and attached by an adhesive to the outer part 19 at three spaced points. In a modification, Fig. 3, the inner part 18 is attached to a reversed cone 26 provided with a hole 27 to reduce air damping and supported by a further spider member 28 secured to the inner polepiece 13. The coilformer 16 is supported between the reversed cone 26 and a flange 18<a> formed on the inner portion 18 of the diaphragm.
GB298935A 1935-01-29 1935-01-29 Improvements in loud speakers Expired GB451178A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB298935A GB451178A (en) 1935-01-29 1935-01-29 Improvements in loud speakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB298935A GB451178A (en) 1935-01-29 1935-01-29 Improvements in loud speakers

Publications (1)

Publication Number Publication Date
GB451178A true GB451178A (en) 1936-07-29

Family

ID=9749805

Family Applications (1)

Application Number Title Priority Date Filing Date
GB298935A Expired GB451178A (en) 1935-01-29 1935-01-29 Improvements in loud speakers

Country Status (1)

Country Link
GB (1) GB451178A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4320264A (en) * 1979-11-28 1982-03-16 Siare-Societe Industrielle D'applications/Radio-Electriques Loudspeaker with a heat resistant two-part diaphragm
US4903308A (en) * 1988-02-10 1990-02-20 Linaeum Corporation Audio transducer with controlled flexibility diaphragm
US4914750A (en) * 1987-07-13 1990-04-03 Avm Hess, Inc. Sound transducer
US5198624A (en) * 1988-02-10 1993-03-30 Linaeum Corporation Audio transducer with controlled flexibility diaphragm
EP2100477A1 (en) * 2007-01-12 2009-09-16 Samson Technologies Corporation Speaker motor and speaker
US20130291646A1 (en) * 2010-11-29 2013-11-07 Marquardt Mechatronik Gmbh Sensor
US8934657B2 (en) 2013-02-07 2015-01-13 Apple Inc. Speaker magnet assembly with included spider
EP3399773A1 (en) * 2017-05-03 2018-11-07 Genelec OY Diaphragm assembly, transducer and method of manufacture

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4320264A (en) * 1979-11-28 1982-03-16 Siare-Societe Industrielle D'applications/Radio-Electriques Loudspeaker with a heat resistant two-part diaphragm
US4914750A (en) * 1987-07-13 1990-04-03 Avm Hess, Inc. Sound transducer
US4903308A (en) * 1988-02-10 1990-02-20 Linaeum Corporation Audio transducer with controlled flexibility diaphragm
US5198624A (en) * 1988-02-10 1993-03-30 Linaeum Corporation Audio transducer with controlled flexibility diaphragm
US8175321B2 (en) 2007-01-12 2012-05-08 Samson Technologies Corporation Speaker motor and speaker
EP2100477A4 (en) * 2007-01-12 2011-06-29 Samson Technologies Corp Speaker motor and speaker
EP2100477A1 (en) * 2007-01-12 2009-09-16 Samson Technologies Corporation Speaker motor and speaker
CN101601308B (en) * 2007-01-12 2013-03-13 萨姆森科技公司 Speaker motor and speaker
US20130291646A1 (en) * 2010-11-29 2013-11-07 Marquardt Mechatronik Gmbh Sensor
US9267859B2 (en) * 2010-11-29 2016-02-23 Marquardt Mechatronik Gmbh Mechanical fluid sensor
US8934657B2 (en) 2013-02-07 2015-01-13 Apple Inc. Speaker magnet assembly with included spider
EP3399773A1 (en) * 2017-05-03 2018-11-07 Genelec OY Diaphragm assembly, transducer and method of manufacture
US10638230B2 (en) 2017-05-03 2020-04-28 Genelec Oy Diaphragm assembly, transducer and method of manufacture

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