JPS56169991A - Member for acoustic device - Google Patents

Member for acoustic device

Info

Publication number
JPS56169991A
JPS56169991A JP7504180A JP7504180A JPS56169991A JP S56169991 A JPS56169991 A JP S56169991A JP 7504180 A JP7504180 A JP 7504180A JP 7504180 A JP7504180 A JP 7504180A JP S56169991 A JPS56169991 A JP S56169991A
Authority
JP
Japan
Prior art keywords
sirasu
sintering
box
speaker box
increase
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.)
Pending
Application number
JP7504180A
Other languages
Japanese (ja)
Inventor
Tamotsu Abe
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 JP7504180A priority Critical patent/JPS56169991A/en
Publication of JPS56169991A publication Critical patent/JPS56169991A/en
Pending 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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Ceramic Products (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

PURPOSE:To decrease the resonance frequency, to increase the absorbing performance and to obtain material excellent in sound-shield performance with low cost, by forming the acoustic device member such as speaker box through sintering of ''Sirasu'' sand nitride. CONSTITUTION:A speaker box is formed with sintering, by mixing ''Sirasu'' sand with 30-40% aluminum powder, heating the mixture at about 1,400 deg.C gaseous nitrogen atmosphere, putting it to a graphite mold in a desired speaker box shape and sintering and forming with hot press at about 1,700 deg.C. The ''Sirasu'' sand nitride (SiN.Al2O3) thus obtained can increase the weight of the speaker box from increased specific gravity, allowing to lower the resonance frequency. Further, inner holes specific to sintered product enables sufficient inner loss to increase the vibration absorption of a box. Further, greater antipressure strength avoids the effect of sound pressure in the box accompanied with speaker drive, the sound shield characteristics are improved and the production of howling can be prevented.
JP7504180A 1980-06-03 1980-06-03 Member for acoustic device Pending JPS56169991A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7504180A JPS56169991A (en) 1980-06-03 1980-06-03 Member for acoustic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7504180A JPS56169991A (en) 1980-06-03 1980-06-03 Member for acoustic device

Publications (1)

Publication Number Publication Date
JPS56169991A true JPS56169991A (en) 1981-12-26

Family

ID=13564721

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7504180A Pending JPS56169991A (en) 1980-06-03 1980-06-03 Member for acoustic device

Country Status (1)

Country Link
JP (1) JPS56169991A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57202281U (en) * 1981-06-19 1982-12-23
FR2584558A1 (en) * 1985-07-05 1987-01-09 Jamo Hi Fi As SPEAKER ELEMENT

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4879216A (en) * 1972-01-25 1973-10-24
JPS53104616A (en) * 1977-02-24 1978-09-12 Kinji Shimada Method of making nitrides from volcanic glass
JPS5515147A (en) * 1978-07-20 1980-02-02 Aikoh Co Structure material for sound equipment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4879216A (en) * 1972-01-25 1973-10-24
JPS53104616A (en) * 1977-02-24 1978-09-12 Kinji Shimada Method of making nitrides from volcanic glass
JPS5515147A (en) * 1978-07-20 1980-02-02 Aikoh Co Structure material for sound equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57202281U (en) * 1981-06-19 1982-12-23
FR2584558A1 (en) * 1985-07-05 1987-01-09 Jamo Hi Fi As SPEAKER ELEMENT

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