JPS54147027A - Thin speaker - Google Patents

Thin speaker

Info

Publication number
JPS54147027A
JPS54147027A JP5580978A JP5580978A JPS54147027A JP S54147027 A JPS54147027 A JP S54147027A JP 5580978 A JP5580978 A JP 5580978A JP 5580978 A JP5580978 A JP 5580978A JP S54147027 A JPS54147027 A JP S54147027A
Authority
JP
Japan
Prior art keywords
voice coil
long
coil
sound quality
providing
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.)
Pending
Application number
JP5580978A
Other languages
Japanese (ja)
Inventor
Kazuo Ito
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP5580978A priority Critical patent/JPS54147027A/en
Publication of JPS54147027A publication Critical patent/JPS54147027A/en
Pending 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
    • H04R9/06—Loudspeakers
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

PURPOSE:To achieve the reduction of depth size without impairing sound quality by providing a magnetic circuit comprising providing the magnetic poles of permanent magnets placed close to the four long planes of a voice coil to a voice coil and series-constituting. CONSTITUTION:A coupler 12 is fixed to the center of one outside end long face 11a of the outside circumference part of an approximately rectangular and hollow coil. The outside circumferential parts of a cone 13 and damper are fixed to a frame 15, hence the voice coil is oscillatably supported in the arrow A direction. There are four permanent magnets 16 making face contact in proximity to the four long planes 11b existing in the voice coil and the directions of magnetization thereof are perpendicular to the long plane of the coil, these four magnets forming the series magnetic circuit sandwiching the longer sides of the voice coil with two yokes 17. Thereby, the depth size may be reduced without imparing sound quality because of the thin type construction or the like.
JP5580978A 1978-05-11 1978-05-11 Thin speaker Pending JPS54147027A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5580978A JPS54147027A (en) 1978-05-11 1978-05-11 Thin speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5580978A JPS54147027A (en) 1978-05-11 1978-05-11 Thin speaker

Publications (1)

Publication Number Publication Date
JPS54147027A true JPS54147027A (en) 1979-11-16

Family

ID=13009244

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5580978A Pending JPS54147027A (en) 1978-05-11 1978-05-11 Thin speaker

Country Status (1)

Country Link
JP (1) JPS54147027A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007129665A (en) * 2005-11-07 2007-05-24 Sony Corp Speaker apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007129665A (en) * 2005-11-07 2007-05-24 Sony Corp Speaker apparatus

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