EP0492142A3 - Driver system for an extended-travel bass loudspeaker - Google Patents

Driver system for an extended-travel bass loudspeaker Download PDF

Info

Publication number
EP0492142A3
EP0492142A3 EP19910120015 EP91120015A EP0492142A3 EP 0492142 A3 EP0492142 A3 EP 0492142A3 EP 19910120015 EP19910120015 EP 19910120015 EP 91120015 A EP91120015 A EP 91120015A EP 0492142 A3 EP0492142 A3 EP 0492142A3
Authority
EP
European Patent Office
Prior art keywords
voice coil
coil
travel
designed
extended
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.)
Granted
Application number
EP19910120015
Other languages
German (de)
Other versions
EP0492142A2 (en
EP0492142B1 (en
Inventor
Ruediger Dipl.-Ing. Fleischer
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.)
Nokia Deutschland GmbH
Original Assignee
Nokia Deutschland GmbH
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 Nokia Deutschland GmbH filed Critical Nokia Deutschland GmbH
Publication of EP0492142A2 publication Critical patent/EP0492142A2/en
Publication of EP0492142A3 publication Critical patent/EP0492142A3/en
Application granted granted Critical
Publication of EP0492142B1 publication Critical patent/EP0492142B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/045—Mounting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
    • H04R2209/041—Voice coil arrangements comprising more than one voice coil unit on the same bobbin

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Stereophonic System (AREA)

Abstract

According to the invention, a drive system designed with extended travel for bass loudspeakers (10) is specified which prevents the voice coil (21) from impinging on the magnet bottom pot and the voice coil (21) from coming to rest on the top pole plate (12) even if the mounting elements are designed to be very soft. For this purpose, a further coil arrangement (22), to which the amplifier power is also applied, is arranged on the voice coil former (19). Since the current is designed to flow in the opposite direction in coil (21) and coil arrangement (22), the voice coil former (19) is actively decelerated as soon as one of the two winding areas (23; 24) plunges into the air gap (25). <IMAGE>
EP91120015A 1990-12-24 1991-11-23 Driver system for an extended-travel bass loudspeaker Expired - Lifetime EP0492142B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4041858A DE4041858A1 (en) 1990-12-24 1990-12-24 DRIVE SYSTEM FOR LONG-HUBBED LOW SPEAKER
DE4041858 1990-12-24

Publications (3)

Publication Number Publication Date
EP0492142A2 EP0492142A2 (en) 1992-07-01
EP0492142A3 true EP0492142A3 (en) 1993-02-10
EP0492142B1 EP0492142B1 (en) 1995-07-26

Family

ID=6421495

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91120015A Expired - Lifetime EP0492142B1 (en) 1990-12-24 1991-11-23 Driver system for an extended-travel bass loudspeaker

Country Status (4)

Country Link
EP (1) EP0492142B1 (en)
AT (1) ATE125662T1 (en)
DE (2) DE4041858A1 (en)
DK (1) DK0492142T3 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5446797A (en) * 1992-07-17 1995-08-29 Linaeum Corporation Audio transducer with etched voice coil
WO1994003026A1 (en) * 1992-07-17 1994-02-03 Linaeum Corporation Audio transducer with etched voice coil
FR2705184B1 (en) * 1993-04-21 1997-05-30 Samsung Electro Mech Loud speaker.
DK54093D0 (en) * 1993-05-10 1993-05-10 Scan Speak As SPEAKER
DE69535513T2 (en) * 1995-04-18 2007-10-04 Harman International Industries, Incorporated, Northridge COIL PAIR DRIVE WITH MULTIPURPOSE HOUSING
CH687353A5 (en) * 1995-11-10 1996-11-15 Granger Frederic Central or peripheral suspension of movable equipment of electrodynamic loudspeaker
US5828767A (en) * 1997-09-22 1998-10-27 Jbl Inc. Inductive braking in a dual coil speaker driver unit
CN1347628A (en) * 1999-04-29 2002-05-01 新型转换器有限公司 Moving coil driver
JP3984397B2 (en) * 1999-09-14 2007-10-03 パイオニア株式会社 Speaker
WO2007031901A1 (en) 2005-09-15 2007-03-22 Pss Belgium N.V. Electrodynamic loudspeaker device
US8385580B2 (en) 2006-08-31 2013-02-26 Adamson Systems Engineering Inc. High power low frequency transducers and method of assembly
DE102007016582B3 (en) * 2007-04-07 2008-06-19 Technische Universität Dresden Magnetostatic loudspeaker, in particular low range loudspeaker, has two partly magnetically conductive housing shells which are carried against permanent magnetic arrangement of repulsive magnetization

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983337A (en) * 1973-06-21 1976-09-28 Babbco, Ltd. Broad-band acoustic speaker
FR2362549A1 (en) * 1976-08-19 1978-03-17 Mainardi Jacques Loudspeaker with two moving coils - has main coil and auxiliary coil which may function as servo or damping element
FR2559332A1 (en) * 1984-02-02 1985-08-09 Ruelle Jean Louis Symmetric linear electromagnetic transducer.
DE3629856A1 (en) * 1985-09-02 1987-04-02 Pioneer Electronic Corp BALANCED MOTOR VEHICLE SPEAKER SYSTEM
US4783824A (en) * 1984-10-23 1988-11-08 Trio Kabushiki Kaisha Speaker unit having two voice coils wound around a common coil bobbin

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7121351U (en) * 1971-09-02 Isophon Werke Gmbh Voice coil with two or more windings for dynamic loud speakers
DE1913371U (en) * 1964-11-20 1965-04-08 Sennheiser Electronic DYNAMIC, ELECTROACOUSTIC CONVERTER (SPEAKER).
GB1442468A (en) * 1973-07-02 1976-07-14 Sony Corp Loudspeakers
DE2528482A1 (en) * 1975-06-26 1977-01-13 Canton Elektronik Gmbh & Co Moving coil loudspeaker with spherical or biconical membrane - is driven from both ends by two opposing in-phase electromagnetic drives
GB2010639B (en) * 1977-12-14 1982-05-19 Matsushita Electric Ind Co Ltd Transducer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983337A (en) * 1973-06-21 1976-09-28 Babbco, Ltd. Broad-band acoustic speaker
FR2362549A1 (en) * 1976-08-19 1978-03-17 Mainardi Jacques Loudspeaker with two moving coils - has main coil and auxiliary coil which may function as servo or damping element
FR2559332A1 (en) * 1984-02-02 1985-08-09 Ruelle Jean Louis Symmetric linear electromagnetic transducer.
US4783824A (en) * 1984-10-23 1988-11-08 Trio Kabushiki Kaisha Speaker unit having two voice coils wound around a common coil bobbin
DE3629856A1 (en) * 1985-09-02 1987-04-02 Pioneer Electronic Corp BALANCED MOTOR VEHICLE SPEAKER SYSTEM

Also Published As

Publication number Publication date
DK0492142T3 (en) 1995-12-11
ATE125662T1 (en) 1995-08-15
DE59106088D1 (en) 1995-08-31
DE4041858A1 (en) 1992-07-02
EP0492142A2 (en) 1992-07-01
EP0492142B1 (en) 1995-07-26

Similar Documents

Publication Publication Date Title
US4868882A (en) Loudspeaker
EP0492142A3 (en) Driver system for an extended-travel bass loudspeaker
CA2245351A1 (en) Forced air cooling system
WO1998047317B1 (en) Slotted diaphragm loudspeaker
DE68919746T2 (en) Speaker.
EP0810810A3 (en) Digital loudspeaker and sound reproduction system employing such a loudspeaker
GB2371165B (en) Magnet system for loudspeakers
US3178512A (en) Electrical sound reproducing device
KR20050007321A (en) Electromagnetic driving unit for a loudspeaker assembly
US3129298A (en) Electro-dynamic conical loudspeaker
GB2029669A (en) Moving coil transducers
JPH0731665Y2 (en) Electromechanical vibration converter
KR970000799B1 (en) A speaker with magnetic circuit which is light
KR970058302A (en) Speaker unit using induction electromotive force
JPH0617434Y2 (en) Speaker
KR940000662Y1 (en) Plate structure for speaker
JPH0756560Y2 (en) Speaker
KR200178876Y1 (en) Damping coil speaker
JP2586418Y2 (en) Magnetic circuit for speaker
JPH04329800A (en) Horn type driver
SU860348A1 (en) Loudspeaker
SU1045413A1 (en) Loudspeaker head
JP2981392B2 (en) Repulsive magnetic field type speaker
KR19990008590A (en) Yoke-attached speakers
KR950005099A (en) Speaker unit

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE DE DK FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE DE DK FR GB IT

17P Request for examination filed

Effective date: 19930714

17Q First examination report despatched

Effective date: 19941214

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE DK FR GB IT

REF Corresponds to:

Ref document number: 125662

Country of ref document: AT

Date of ref document: 19950815

Kind code of ref document: T

ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19950731

REF Corresponds to:

Ref document number: 59106088

Country of ref document: DE

Date of ref document: 19950831

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 19951108

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19951109

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19951113

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19951115

Year of fee payment: 5

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19960109

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19961123

Ref country code: DK

Effective date: 19961123

Ref country code: AT

Effective date: 19961123

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19961130

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19970114

Year of fee payment: 6

BERE Be: lapsed

Owner name: NOKIA (DEUTSCHLAND) G.M.B.H.

Effective date: 19961130

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19961123

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19970731

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980801

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051123