JPS5235622A - Speaker center bowl manufacturing method - Google Patents

Speaker center bowl manufacturing method

Info

Publication number
JPS5235622A
JPS5235622A JP11155475A JP11155475A JPS5235622A JP S5235622 A JPS5235622 A JP S5235622A JP 11155475 A JP11155475 A JP 11155475A JP 11155475 A JP11155475 A JP 11155475A JP S5235622 A JPS5235622 A JP S5235622A
Authority
JP
Japan
Prior art keywords
center bowl
speaker center
bowl manufacturing
manufacturing
speaker
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
JP11155475A
Other languages
Japanese (ja)
Other versions
JPS5816680B2 (en
Inventor
Masanori Hino
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.)
Onkyo Corp
Original Assignee
Onkyo Corp
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 Onkyo Corp filed Critical Onkyo Corp
Priority to JP11155475A priority Critical patent/JPS5816680B2/en
Publication of JPS5235622A publication Critical patent/JPS5235622A/en
Publication of JPS5816680B2 publication Critical patent/JPS5816680B2/en
Expired 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
    • 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

Abstract

PURPOSE:To ensure precision processing for mass production purposes through the forging method using bowl-shaped copper plate die.
JP11155475A 1975-09-12 1975-09-12 Speaker center pole Expired JPS5816680B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11155475A JPS5816680B2 (en) 1975-09-12 1975-09-12 Speaker center pole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11155475A JPS5816680B2 (en) 1975-09-12 1975-09-12 Speaker center pole

Publications (2)

Publication Number Publication Date
JPS5235622A true JPS5235622A (en) 1977-03-18
JPS5816680B2 JPS5816680B2 (en) 1983-04-01

Family

ID=14564319

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11155475A Expired JPS5816680B2 (en) 1975-09-12 1975-09-12 Speaker center pole

Country Status (1)

Country Link
JP (1) JPS5816680B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58122405A (en) * 1981-09-18 1983-07-21 Mitsubishi Heavy Ind Ltd Measuring device of internal diameter
US6487771B1 (en) * 2000-05-09 2002-12-03 Hui Chiu Lin Method for manufacturing speaker bottom yoke

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58122405A (en) * 1981-09-18 1983-07-21 Mitsubishi Heavy Ind Ltd Measuring device of internal diameter
US6487771B1 (en) * 2000-05-09 2002-12-03 Hui Chiu Lin Method for manufacturing speaker bottom yoke

Also Published As

Publication number Publication date
JPS5816680B2 (en) 1983-04-01

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