JPS5787698A - Damper for speaker - Google Patents

Damper for speaker

Info

Publication number
JPS5787698A
JPS5787698A JP16423480A JP16423480A JPS5787698A JP S5787698 A JPS5787698 A JP S5787698A JP 16423480 A JP16423480 A JP 16423480A JP 16423480 A JP16423480 A JP 16423480A JP S5787698 A JPS5787698 A JP S5787698A
Authority
JP
Japan
Prior art keywords
phenol
forming agent
reacted
polybutadiene
acid catalyst
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
JP16423480A
Other languages
Japanese (ja)
Other versions
JPS6335158B2 (en
Inventor
Akira Ikei
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 JP16423480A priority Critical patent/JPS5787698A/en
Publication of JPS5787698A publication Critical patent/JPS5787698A/en
Publication of JPS6335158B2 publication Critical patent/JPS6335158B2/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction

Landscapes

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

Abstract

PURPOSE:To avoid the change in a minimum resonance frequency and frequency characteristics, by using a modified phenol resin, chemically bonded and unified phenol and polybutadiene as forming agent. CONSTITUTION:Isoprophenyl phenol or olygomer of isopropenyl phenol or their mixture and polybutadiene are reacted under the presence of acid catalyst. Further, they are reacted with phenol under the presence of acid catalyst. This reaction product is reacted with formaldehyde as a portion of phenyl and the obtained modified phenol resin is used as forming agent. This forming agent is impregnated to a base cloth and formed into a specified shape.
JP16423480A 1980-11-20 1980-11-20 Damper for speaker Granted JPS5787698A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16423480A JPS5787698A (en) 1980-11-20 1980-11-20 Damper for speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16423480A JPS5787698A (en) 1980-11-20 1980-11-20 Damper for speaker

Publications (2)

Publication Number Publication Date
JPS5787698A true JPS5787698A (en) 1982-06-01
JPS6335158B2 JPS6335158B2 (en) 1988-07-13

Family

ID=15789213

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16423480A Granted JPS5787698A (en) 1980-11-20 1980-11-20 Damper for speaker

Country Status (1)

Country Link
JP (1) JPS5787698A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006078008A1 (en) * 2005-01-24 2006-07-27 Matsushita Electric Industrial Co., Ltd. Loudspeaker damper, manufacturing method thereof, and loudspeaker and electronic device using the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006078008A1 (en) * 2005-01-24 2006-07-27 Matsushita Electric Industrial Co., Ltd. Loudspeaker damper, manufacturing method thereof, and loudspeaker and electronic device using the same
US8098869B2 (en) 2005-01-24 2012-01-17 Panasonic Corporation Loudspeaker damper, manufacturing method thereof, and loudspeaker and electronic device using the same

Also Published As

Publication number Publication date
JPS6335158B2 (en) 1988-07-13

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