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JPS57210798A - Speaker system - Google Patents

Speaker system

Info

Publication number
JPS57210798A
JPS57210798A JP56095836A JP9583681A JPS57210798A JP S57210798 A JPS57210798 A JP S57210798A JP 56095836 A JP56095836 A JP 56095836A JP 9583681 A JP9583681 A JP 9583681A JP S57210798 A JPS57210798 A JP S57210798A
Authority
JP
Japan
Prior art keywords
cabinet
fleon
phase
liquid
wick
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
JP56095836A
Other languages
Japanese (ja)
Inventor
Tsuneo Tanaka
Katsumasa Sato
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 JP56095836A priority Critical patent/JPS57210798A/en
Publication of JPS57210798A publication Critical patent/JPS57210798A/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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2876—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding
    • H04R1/288—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding for loudspeaker transducers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

PURPOSE:To increase the compliance much more, by realizing a two-phase co- existing system in a single cabinet. CONSTITUTION:A speaker 42 is fitted to a cabinet 41 made of Al dicast. Porous metal (wick) to increase the surface area almost as a whole is provided in the cabinet 41. The air in the cabinet 41 is replaced with fleon to keep the fleon in gas-liquid two-phase equilibrium. The liquid phase of fleon is condensed on the surface of the wick 43 and at the inside of the cabinet 41 as liquid drops and not pooled at the bottom of the cabinet 41. The diaphragm and the edge are made of molded polyvinylidene film with very small transmitting rate of fleon, and the transmission of gas from those parts can be ignored. Thus, the minimum resonance frequency f0 is 73.8Hz and it is cleared that the frequency is lower than conventional systems.
JP56095836A 1981-06-19 1981-06-19 Speaker system Pending JPS57210798A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56095836A JPS57210798A (en) 1981-06-19 1981-06-19 Speaker system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56095836A JPS57210798A (en) 1981-06-19 1981-06-19 Speaker system

Publications (1)

Publication Number Publication Date
JPS57210798A true JPS57210798A (en) 1982-12-24

Family

ID=14148463

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56095836A Pending JPS57210798A (en) 1981-06-19 1981-06-19 Speaker system

Country Status (1)

Country Link
JP (1) JPS57210798A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984003600A1 (en) * 1983-03-02 1984-09-13 Brian Douglas Ward Constant pressure device
JP2001517004A (en) * 1997-09-05 2001-10-02 １… アイピーアール リミテッド Multi-bubble aggregates, piezoelectric devices, and uses thereof
WO2005101896A1 (en) * 2004-04-13 2005-10-27 Matsushita Electric Industrial Co., Ltd. Speaker device
WO2006104103A1 (en) * 2005-03-28 2006-10-05 Matsushita Electric Industrial Co., Ltd. Speaker device
JPWO2006022199A1 (en) * 2004-08-23 2008-05-08 松下電器産業株式会社 Speaker device
JP2008252908A (en) * 2004-09-27 2008-10-16 Matsushita Electric Ind Co Ltd Speaker device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984003600A1 (en) * 1983-03-02 1984-09-13 Brian Douglas Ward Constant pressure device
GB2146871A (en) * 1983-03-02 1985-04-24 Brian Douglas Ward Constant pressure device
JPS60500645A (en) * 1983-03-02 1985-05-02 ケイ・エイチ・テクノロジー・コーポレイション constant pressure device
JP2001517004A (en) * 1997-09-05 2001-10-02 １… アイピーアール リミテッド Multi-bubble aggregates, piezoelectric devices, and uses thereof
WO2005101896A1 (en) * 2004-04-13 2005-10-27 Matsushita Electric Industrial Co., Ltd. Speaker device
US7477755B2 (en) 2004-04-13 2009-01-13 Panasonic Corporation Speaker system
CN1910951B (en) 2004-04-13 2012-04-11 松下电器产业株式会社 speaker system
JPWO2006022199A1 (en) * 2004-08-23 2008-05-08 松下電器産業株式会社 Speaker device
US7974423B2 (en) 2004-08-23 2011-07-05 Panasonic Corporation Loudspeaker system
JP2008252908A (en) * 2004-09-27 2008-10-16 Matsushita Electric Ind Co Ltd Speaker device
WO2006104103A1 (en) * 2005-03-28 2006-10-05 Matsushita Electric Industrial Co., Ltd. Speaker device

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