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WO2008001190A3 - A ribbon driver and a loudspeaker including a ribbon driver - Google Patents

A ribbon driver and a loudspeaker including a ribbon driver Download PDF

Info

Publication number
WO2008001190A3
WO2008001190A3 PCT/IB2007/001734 IB2007001734W WO2008001190A3 WO 2008001190 A3 WO2008001190 A3 WO 2008001190A3 IB 2007001734 W IB2007001734 W IB 2007001734W WO 2008001190 A3 WO2008001190 A3 WO 2008001190A3
Authority
WO
WIPO (PCT)
Prior art keywords
magnets
vertically extending
gaps
ribbon
gap
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.)
Ceased
Application number
PCT/IB2007/001734
Other languages
French (fr)
Other versions
WO2008001190A2 (en
Inventor
Clive Hugh Neville Thomas
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.)
RAMATLOTLO HOLDINGS Pty Ltd
Original Assignee
RAMATLOTLO HOLDINGS Pty 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 RAMATLOTLO HOLDINGS Pty Ltd filed Critical RAMATLOTLO HOLDINGS Pty Ltd
Publication of WO2008001190A2 publication Critical patent/WO2008001190A2/en
Publication of WO2008001190A3 publication Critical patent/WO2008001190A3/en
Anticipated expiration legal-status Critical
Ceased 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
    • H04R9/046—Construction
    • H04R9/047—Construction in which the windings of the moving coil lay in the same plane
    • H04R9/048—Construction in which the windings of the moving coil lay in the same plane of the ribbon type
    • 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)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

A composite ribbon driver or loudspeaker comprises a frame which has a plurality of vertical and horizontal frame members connected together to form a plurality of vertically extending gaps. Arrays of magnets are held in position on each vertically extending frame member on opposite sides of the gaps, the magnets in each gap being spaced apart a predefined distance. A ribbon is mounted in each vertically extending gap, the respective ribbons spanning between a pair of horizontal frame members. The ribbons have a width which is less than the gap between the magnets. Arrays of auxiliary magnets on the outside of the outermost two vertically extending frame members are arranged and configured to render the magnetic fields in the outermost gaps substantially symmetric about the longitudinal centrelines of those outermost gaps. The invention extends to kits for the manufacture of ribbon loudspeakers.
PCT/IB2007/001734 2006-06-26 2007-06-25 A ribbon driver and a loudspeaker including a ribbon driver Ceased WO2008001190A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA2006/05255 2006-06-26
ZA200605255 2006-06-26

Publications (2)

Publication Number Publication Date
WO2008001190A2 WO2008001190A2 (en) 2008-01-03
WO2008001190A3 true WO2008001190A3 (en) 2008-03-13

Family

ID=38846022

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/001734 Ceased WO2008001190A2 (en) 2006-06-26 2007-06-25 A ribbon driver and a loudspeaker including a ribbon driver

Country Status (1)

Country Link
WO (1) WO2008001190A2 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5021613A (en) * 1985-09-23 1991-06-04 Gold Ribbon Concepts, Inc. Ribbon loudspeaker
US5195143A (en) * 1991-05-31 1993-03-16 Apogee Acoustics, Inc. Acoustical ribbon transducer loudspeaker system
US20020080991A1 (en) * 2000-09-26 2002-06-27 Bengtsson Bo Philip Universal ribbon element-module for two or more membrane-widths with optimized flow and drive
US20020126867A1 (en) * 2001-03-07 2002-09-12 Eliezer Aizik Flexible ribbon speaker
US20060078135A1 (en) * 2004-10-08 2006-04-13 Royer David E Ribbon-microphone transducer
WO2006047048A2 (en) * 2004-10-21 2006-05-04 Crowley Robert J Acoustic ribbon transducer arrangements

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5021613A (en) * 1985-09-23 1991-06-04 Gold Ribbon Concepts, Inc. Ribbon loudspeaker
US5195143A (en) * 1991-05-31 1993-03-16 Apogee Acoustics, Inc. Acoustical ribbon transducer loudspeaker system
US20020080991A1 (en) * 2000-09-26 2002-06-27 Bengtsson Bo Philip Universal ribbon element-module for two or more membrane-widths with optimized flow and drive
US20020126867A1 (en) * 2001-03-07 2002-09-12 Eliezer Aizik Flexible ribbon speaker
US20060078135A1 (en) * 2004-10-08 2006-04-13 Royer David E Ribbon-microphone transducer
WO2006047048A2 (en) * 2004-10-21 2006-05-04 Crowley Robert J Acoustic ribbon transducer arrangements

Also Published As

Publication number Publication date
WO2008001190A2 (en) 2008-01-03

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