NO934298L - Magnetic drive system for loudspeakers - Google Patents

Magnetic drive system for loudspeakers

Info

Publication number
NO934298L
NO934298L NO934298A NO934298A NO934298L NO 934298 L NO934298 L NO 934298L NO 934298 A NO934298 A NO 934298A NO 934298 A NO934298 A NO 934298A NO 934298 L NO934298 L NO 934298L
Authority
NO
Norway
Prior art keywords
chassis
unit
diaphragm
drive coil
reduce
Prior art date
Application number
NO934298A
Other languages
Norwegian (no)
Other versions
NO934298D0 (en
Inventor
Lawrence Reginald Fincham
Original Assignee
Kef Audio Uk 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 Kef Audio Uk Ltd filed Critical Kef Audio Uk Ltd
Publication of NO934298D0 publication Critical patent/NO934298D0/en
Publication of NO934298L publication Critical patent/NO934298L/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers
    • 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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

Høyttalerkonstruksjon hvor et kjegleformet membran (15) bevirkes til å generere og stråle ut lyd ved hjelp av et samvirke mellom en drlvspole på en spoleform (24) fastgjort til halsen til membranet og en magnetenhet (14) fastgjort til høyttalerens chassis (10). Elektrisk aktivering av drivspolen frembringer en drivkraft som virker på drivspolen for å bevege membranet. For å redusere eller forhindre stråling av lyden fra en frontring (11) på chassiset og en ledeplate på hvilken chassiset er montert, hvilken stråling oppstår fra reaksjonen på drivkraften som virker på magnetenheten, er magnetenheten mekanisk isolert eller dekoblet fra chassiset. Dette tilveiebringes ved å fastgjøre magnetenheten til chassiset ved hjelp av elastiske monteringsinnretninger (14) for å redusere eller forhindre overføring av reaksjonskraften fra roagnet- enheten til chassiset.Speaker structure wherein a cone-shaped diaphragm (15) is generated to generate and emit sound by means of a cooperation between a drive coil on a coil mold (24) attached to the neck of the diaphragm and a magnetic unit (14) attached to the speaker's chassis (10). Electric activation of the drive coil produces a driving force acting on the drive coil to move the diaphragm. To reduce or prevent radiation of the sound from a front ring (11) on the chassis and a baffle on which the chassis is mounted, which radiation arises from the reaction to the driving force acting on the magnet unit, the magnet unit is mechanically isolated or decoupled from the chassis. This is achieved by attaching the magnetic unit to the chassis by means of elastic mounting means (14) to reduce or prevent the transfer of the reaction force from the roagnet unit to the chassis.

NO934298A 1991-05-31 1993-11-26 Magnetic drive system for loudspeakers NO934298L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9111737A GB2256560B (en) 1991-05-31 1991-05-31 Loudspeaker
PCT/GB1992/000970 WO1992022175A1 (en) 1991-05-31 1992-05-29 Magnetic drive system for loudspeaker

Publications (2)

Publication Number Publication Date
NO934298D0 NO934298D0 (en) 1993-11-26
NO934298L true NO934298L (en) 1993-11-26

Family

ID=10695878

Family Applications (1)

Application Number Title Priority Date Filing Date
NO934298A NO934298L (en) 1991-05-31 1993-11-26 Magnetic drive system for loudspeakers

Country Status (6)

Country Link
EP (1) EP0516471A1 (en)
CA (1) CA2109711A1 (en)
GB (1) GB2256560B (en)
NO (1) NO934298L (en)
NZ (1) NZ242962A (en)
WO (1) WO1992022175A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996014722A1 (en) * 1994-11-04 1996-05-17 Philips Electronics N.V. Apparatus comprising a baffle and a loudspeaker, and loudspeaker for use in the apparatus
DE10149518A1 (en) * 2001-10-08 2003-04-10 Kolja Willimzik Electroacoustic device for conversion of electrical signals into acoustic signals comprises electrodynamic converter(s) whose drive is coupled to an element with a mass equal to at least 100 times the converter mass
WO2009048607A1 (en) 2007-10-10 2009-04-16 Corium International, Inc. Vaccine delivery via microneedle arrays
GB2497315A (en) * 2011-12-06 2013-06-12 B & W Group Ltd Decoupled loudspeaker drive unit operated by magnet reaction force or recoil
WO2021134429A1 (en) * 2019-12-31 2021-07-08 瑞声声学科技(深圳)有限公司 Loudspeaker box
FR3138258A1 (en) 2022-07-19 2024-01-26 Cédric Carlavan SPEAKER AND FURNITURE EQUIPPED WITH SUCH A SPEAKER

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3667568A (en) * 1970-09-15 1972-06-06 Arthur Liebscher Pressure compensator for speaker cabinets
GB1508348A (en) * 1975-06-10 1978-04-26 Mark Products Seismometer
JPS606157B2 (en) * 1977-07-25 1985-02-15 ソニー株式会社 speaker
DE3414407C2 (en) * 1984-04-17 1986-02-20 Jürgen 6804 Ilvesheim Quaas Arrangement of sound transducers in a sound guide, in particular for loudspeaker boxes
JPH0326714Y2 (en) * 1986-02-24 1991-06-10
FR2625639B1 (en) * 1987-12-30 1991-11-15 Kobus Stanislas FIXING DEVICE FOR ELECTRODYNAMIC SPEAKER
JPH01162990U (en) * 1988-04-30 1989-11-14

Also Published As

Publication number Publication date
CA2109711A1 (en) 1992-12-10
GB2256560B (en) 1994-11-23
WO1992022175A1 (en) 1992-12-10
NO934298D0 (en) 1993-11-26
GB9111737D0 (en) 1991-07-24
NZ242962A (en) 1994-10-26
GB2256560A (en) 1992-12-09
EP0516471A1 (en) 1992-12-02

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