JPH0234520B2 - - Google Patents

Info

Publication number
JPH0234520B2
JPH0234520B2 JP57104958A JP10495882A JPH0234520B2 JP H0234520 B2 JPH0234520 B2 JP H0234520B2 JP 57104958 A JP57104958 A JP 57104958A JP 10495882 A JP10495882 A JP 10495882A JP H0234520 B2 JPH0234520 B2 JP H0234520B2
Authority
JP
Japan
Prior art keywords
polypropylene
sheet
methylpentene
internal loss
diaphragm
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
JP57104958A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58221595A (ja
Inventor
Tooru Yamamoto
Koji Takeda
Teruo Kobayashi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP10495882A priority Critical patent/JPS58221595A/ja
Priority to US06/471,456 priority patent/US4471085A/en
Priority to GB08305863A priority patent/GB2117389B/en
Priority to DE19833307946 priority patent/DE3307946A1/de
Publication of JPS58221595A publication Critical patent/JPS58221595A/ja
Publication of JPH0234520B2 publication Critical patent/JPH0234520B2/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/029—Diaphragms comprising fibres

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
JP10495882A 1982-03-08 1982-06-17 スピ−カ用振動板 Granted JPS58221595A (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP10495882A JPS58221595A (ja) 1982-06-17 1982-06-17 スピ−カ用振動板
US06/471,456 US4471085A (en) 1982-03-08 1983-03-02 Diaphragm material for loudspeakers
GB08305863A GB2117389B (en) 1982-03-08 1983-03-03 Compositions for use in forming loudspeaker diaphragms
DE19833307946 DE3307946A1 (de) 1982-03-08 1983-03-07 Membranwerkstoff fuer lautsprecher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10495882A JPS58221595A (ja) 1982-06-17 1982-06-17 スピ−カ用振動板

Publications (2)

Publication Number Publication Date
JPS58221595A JPS58221595A (ja) 1983-12-23
JPH0234520B2 true JPH0234520B2 (enrdf_load_stackoverflow) 1990-08-03

Family

ID=14394601

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10495882A Granted JPS58221595A (ja) 1982-03-08 1982-06-17 スピ−カ用振動板

Country Status (1)

Country Link
JP (1) JPS58221595A (enrdf_load_stackoverflow)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS583499A (ja) * 1981-06-30 1983-01-10 Kuraray Co Ltd 音響振動板

Also Published As

Publication number Publication date
JPS58221595A (ja) 1983-12-23

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