IT945663B - IMPROVEMENT IN SPEAKERS FOR MEDIUM FREQUENCIES - Google Patents

IMPROVEMENT IN SPEAKERS FOR MEDIUM FREQUENCIES

Info

Publication number
IT945663B
IT945663B IT55019/71A IT5501971A IT945663B IT 945663 B IT945663 B IT 945663B IT 55019/71 A IT55019/71 A IT 55019/71A IT 5501971 A IT5501971 A IT 5501971A IT 945663 B IT945663 B IT 945663B
Authority
IT
Italy
Prior art keywords
speakers
improvement
medium frequencies
frequencies
medium
Prior art date
Application number
IT55019/71A
Other languages
Italian (it)
Original Assignee
Rola Celestion Ltd
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 Rola Celestion Ltd filed Critical Rola Celestion Ltd
Application granted granted Critical
Publication of IT945663B publication Critical patent/IT945663B/en

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
    • H04R7/127—Non-planar diaphragms or cones dome-shaped
    • 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
    • H04R7/22—Clamping rim of diaphragm or cone against seating
IT55019/71A 1971-01-04 1971-12-27 IMPROVEMENT IN SPEAKERS FOR MEDIUM FREQUENCIES IT945663B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB33171*[A GB1380914A (en) 1971-01-04 1971-01-04 Diaphragm assemblies for electro-acoustic transducers

Publications (1)

Publication Number Publication Date
IT945663B true IT945663B (en) 1973-05-10

Family

ID=9702509

Family Applications (1)

Application Number Title Priority Date Filing Date
IT55019/71A IT945663B (en) 1971-01-04 1971-12-27 IMPROVEMENT IN SPEAKERS FOR MEDIUM FREQUENCIES

Country Status (15)

Country Link
US (1) US3780232A (en)
AT (1) AT326744B (en)
BE (1) BE777617A (en)
CH (1) CH545053A (en)
DE (2) DE2165572C3 (en)
DK (1) DK138148B (en)
ES (1) ES398583A1 (en)
FI (1) FI57507C (en)
FR (1) FR2121536B1 (en)
GB (1) GB1380914A (en)
IE (1) IE35948B1 (en)
IT (1) IT945663B (en)
NL (1) NL7200036A (en)
NO (1) NO130255B (en)
SE (1) SE379474C (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1531791A (en) * 1976-03-17 1978-11-08 Rank Organisation Ltd Transducers
JPS5414726A (en) * 1977-07-06 1979-02-03 Hitachi Ltd Dome type speaker
DE2941644C2 (en) * 1978-10-17 1982-11-11 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Loudspeaker cone and process for their manufacture
DE2905566A1 (en) * 1979-02-14 1980-08-28 Standard Elektrik Lorenz Ag UNIVERSAL CALOTE SPEAKER COMPONENT
CH639707A5 (en) * 1979-08-16 1983-11-30 Staeubli Ag ROTATION MACHINE.
JPS6042558Y2 (en) * 1980-04-17 1985-12-27 ソニー株式会社 speaker
US4433214A (en) * 1981-12-24 1984-02-21 Motorola, Inc. Acoustical transducer with a slotted piston suspension
DE3722832A1 (en) * 1987-07-03 1989-01-12 Electronic Werke Deutschland Diaphragm for a loudspeaker
US5357587A (en) * 1992-12-23 1994-10-18 Grodinsky Robert M Distortion reduction in loudspeakers
JP3140895B2 (en) * 1993-10-08 2001-03-05 パイオニア株式会社 Speaker device
AT414069B (en) * 1999-04-22 2006-08-15 Akg Acoustics Gmbh ELECTRIC ACOUSTIC CONVERTER FOR EXTREME PRESSURE LOADS
US6724910B1 (en) 1999-10-04 2004-04-20 Harman International Industries, Incorporated Diaphragm stable through hygroscopic cycling
US6351544B1 (en) 1999-12-10 2002-02-26 Harman International Industries Incorporated Regressively hinged spider
JP2002152885A (en) * 2000-11-14 2002-05-24 Sony Corp Speaker system
DK1515582T3 (en) * 2003-09-11 2006-05-15 Akg Acoustics Gmbh Dynamic electro-acoustic converter, especially small speaker
EP1694094A1 (en) * 2005-02-18 2006-08-23 AKG Acoustics GmbH Membrane for a dynamic converter
AU2007231525A1 (en) * 2006-03-28 2007-10-04 Immersion Technology Property Limited Loudspeaker system with acoustic equalisation
US8848960B2 (en) * 2008-05-21 2014-09-30 Genus Audio Corp. Speaker
CN103085338B (en) * 2013-01-21 2014-12-10 宁海县雁苍山电力建设有限公司 Manufacturing method of mold pressing combined paper winding drum
GB2525429A (en) * 2014-04-24 2015-10-28 Funktion One Res Loudspeaker
CN204929237U (en) * 2015-07-31 2015-12-30 常州美欧电子有限公司 Portable terminal

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US685429A (en) * 1901-02-05 1901-10-29 George Osten Diaphragm for acoustical apparatus.
GB385286A (en) * 1930-03-17 1932-12-22 Walter Greppert Improvements in and relating to diaphragms, more particularly for sound boxes of talking machines
US2442791A (en) * 1945-09-07 1948-06-08 Bell Telephone Labor Inc Acoustic device
GB763974A (en) * 1953-10-14 1956-12-19 Koepenick Funkwerk Veb Electro-acoustic transducer of the moving coil type
US2974204A (en) * 1954-07-06 1961-03-07 Kane Corp Du Transducer
AT193449B (en) * 1955-09-30 1957-11-25 Siemens Ag Metal membrane
DE1107712B (en) * 1958-12-31 1961-05-31 Sennheiser Electronic Method of making a membrane
US3033945A (en) * 1959-05-01 1962-05-08 Ar Inc Voice coil and diaphragm support for high frequency loud-speaker
US3328537A (en) * 1964-01-09 1967-06-27 Hecht William High frequency sound translating device
AT274080B (en) * 1967-07-05 1969-09-10 Philips Nv Sound transducer with a foam membrane

Also Published As

Publication number Publication date
DK138148C (en) 1979-01-08
NL7200036A (en) 1972-07-06
NO130255B (en) 1974-07-29
ES398583A1 (en) 1974-09-16
DE2165572B2 (en) 1975-11-06
FI57507B (en) 1980-04-30
SE379474B (en) 1975-10-06
SE379474C (en) 1981-04-23
DK138148B (en) 1978-07-17
DE2165572C3 (en) 1981-06-19
DE2165572A1 (en) 1972-07-20
IE35948B1 (en) 1976-07-07
GB1380914A (en) 1975-01-15
DE2166848A1 (en) 1976-03-11
BE777617A (en) 1972-04-17
US3780232A (en) 1973-12-18
AT326744B (en) 1975-12-29
FR2121536A1 (en) 1972-08-25
FI57507C (en) 1980-08-11
CH545053A (en) 1973-11-30
FR2121536B1 (en) 1979-08-03
IE35948L (en) 1972-07-04

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