JPH0477520B2 - - Google Patents

Info

Publication number
JPH0477520B2
JPH0477520B2 JP57224059A JP22405982A JPH0477520B2 JP H0477520 B2 JPH0477520 B2 JP H0477520B2 JP 57224059 A JP57224059 A JP 57224059A JP 22405982 A JP22405982 A JP 22405982A JP H0477520 B2 JPH0477520 B2 JP H0477520B2
Authority
JP
Japan
Prior art keywords
gap
permanent magnet
magnetic flux
air gap
annular
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.)
Expired - Lifetime
Application number
JP57224059A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58151199A (ja
Inventor
Koruto Etsukeharuto
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of JPS58151199A publication Critical patent/JPS58151199A/ja
Publication of JPH0477520B2 publication Critical patent/JPH0477520B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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
    • H04R2209/022—Aspects regarding the stray flux internal or external to the magnetic circuit, e.g. shielding, shape of magnetic circuit, flux compensation coils

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
JP22405982A 1981-12-24 1982-12-22 環状空隙磁石装置 Granted JPS58151199A (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE31515304 1981-12-24
DE19813151530 DE3151530A1 (de) 1981-12-24 1981-12-24 Ringspaltmagnetsystem, insbesondere fuer tiefton-lautsprecher
DE82261660 1982-09-17

Publications (2)

Publication Number Publication Date
JPS58151199A JPS58151199A (ja) 1983-09-08
JPH0477520B2 true JPH0477520B2 (fr) 1992-12-08

Family

ID=6149825

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22405982A Granted JPS58151199A (ja) 1981-12-24 1982-12-22 環状空隙磁石装置

Country Status (2)

Country Link
JP (1) JPS58151199A (fr)
DE (1) DE3151530A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007174604A (ja) * 2005-12-26 2007-07-05 Pioneer Electronic Corp スピーカ装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4513349Y1 (fr) * 1967-11-30 1970-06-08

Also Published As

Publication number Publication date
DE3151530A1 (de) 1983-07-07
JPS58151199A (ja) 1983-09-08

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