JPS5648797A - Loudspeaker - Google Patents

Loudspeaker

Info

Publication number
JPS5648797A
JPS5648797A JP12406279A JP12406279A JPS5648797A JP S5648797 A JPS5648797 A JP S5648797A JP 12406279 A JP12406279 A JP 12406279A JP 12406279 A JP12406279 A JP 12406279A JP S5648797 A JPS5648797 A JP S5648797A
Authority
JP
Japan
Prior art keywords
resistance
constant
circuit
forming circuit
voice coil
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
JP12406279A
Other languages
Japanese (ja)
Other versions
JPS6136436B2 (en
Inventor
Koji Kito
Toru Mori
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12406279A priority Critical patent/JPS5648797A/en
Publication of JPS5648797A publication Critical patent/JPS5648797A/en
Publication of JPS6136436B2 publication Critical patent/JPS6136436B2/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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

PURPOSE:To equalize electric impedance viewed from a terminal to the DC resistance value of a voice coil, by adding a constant-resistance forming circuit to a loudspeaker unit. CONSTITUTION:The constant-resistance forming circuit is formed of the series circuit made of coil 15, capacitor 14 and resistance 17, capacitor 14 connected in parallel to the series circuit, and resistance 13 connected in series to the parallel circuit. The thus formed constant-resistance forming circuit is connected across the voice coil of loudspeaker unit 7 and values of various elements of the constant- resistance forming circuit are set to equalize electric impedance, viewed from terminals 1, to pure resistance, so that the impedance viewed from terminals 1 can be equalized to the DC resistance value of the voice coil.
JP12406279A 1979-09-28 1979-09-28 Loudspeaker Granted JPS5648797A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12406279A JPS5648797A (en) 1979-09-28 1979-09-28 Loudspeaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12406279A JPS5648797A (en) 1979-09-28 1979-09-28 Loudspeaker

Publications (2)

Publication Number Publication Date
JPS5648797A true JPS5648797A (en) 1981-05-02
JPS6136436B2 JPS6136436B2 (en) 1986-08-18

Family

ID=14876009

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12406279A Granted JPS5648797A (en) 1979-09-28 1979-09-28 Loudspeaker

Country Status (1)

Country Link
JP (1) JPS5648797A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4843625A (en) * 1986-03-18 1989-06-27 King Brian M Sound reproduction systems

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62198129U (en) * 1986-06-10 1987-12-16

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4843625A (en) * 1986-03-18 1989-06-27 King Brian M Sound reproduction systems

Also Published As

Publication number Publication date
JPS6136436B2 (en) 1986-08-18

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