DK251586A - MULTIPLE SPEAKER WITH PIEZOELECTRIC TWEETER - Google Patents

MULTIPLE SPEAKER WITH PIEZOELECTRIC TWEETER Download PDF

Info

Publication number
DK251586A
DK251586A DK251586A DK251586A DK251586A DK 251586 A DK251586 A DK 251586A DK 251586 A DK251586 A DK 251586A DK 251586 A DK251586 A DK 251586A DK 251586 A DK251586 A DK 251586A
Authority
DK
Denmark
Prior art keywords
tweeter
piezoelectric
support
main loudspeaker
radiation
Prior art date
Application number
DK251586A
Other languages
Danish (da)
Other versions
DK171190B1 (en
DK251586D0 (en
Inventor
Franco Tontini
Carlo Sancisi
Original Assignee
Sipe Spa
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 Sipe Spa filed Critical Sipe Spa
Publication of DK251586D0 publication Critical patent/DK251586D0/en
Publication of DK251586A publication Critical patent/DK251586A/en
Application granted granted Critical
Publication of DK171190B1 publication Critical patent/DK171190B1/en

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
    • H04R9/06—Loudspeakers
    • 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 
    • H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Otolaryngology (AREA)
  • Health & Medical Sciences (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Cosmetics (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Dental Preparations (AREA)

Abstract

This invention concerns a multiple loudspeaker with a piezo-electric "tweeter", held up by a means of support which allows the rear wave emitted by the ceramic disk and respective conical diaphragm to be fully exploited, using the main loudspeaker cone as a reflecting surface without overloading the moving coil of the latter. The invention is basically characterized by the fact that the piezoelectric "tweeter" is placed in front of the main loudspeaker cone, without the traditional protection and support basket, but using a different means of support which does not intercept or disturb the rear radiation from the piezoelectric "tweeter", or prevent the forward reflection of the radiation by the main loudspeaker diaphragm.
DK251586A 1985-09-02 1986-05-29 Multiple speaker with piezoelectric speaker unit DK171190B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT6258585 1985-09-02
IT00625/85A IT1187062B (en) 1985-09-02 1985-09-02 MULTIPLE SPEAKER, WITH PIEZOELECTRIC "TWEETER" SUPPORTED WITH MEANS THAT ALLOW THE EXPLOITATION OF THE MEMBRANE OF THE MAIN SPEAKER AS THE REFLECTIVE SURFACE OF THE RADIATION EMITTED REAR FROM THE CERAMIC DISC AND THE "TWE" MEMBRET

Publications (3)

Publication Number Publication Date
DK251586D0 DK251586D0 (en) 1986-05-29
DK251586A true DK251586A (en) 1987-03-03
DK171190B1 DK171190B1 (en) 1996-07-15

Family

ID=11293510

Family Applications (1)

Application Number Title Priority Date Filing Date
DK251586A DK171190B1 (en) 1985-09-02 1986-05-29 Multiple speaker with piezoelectric speaker unit

Country Status (11)

Country Link
EP (1) EP0220354B1 (en)
JP (1) JPH0738752B2 (en)
KR (1) KR950002765B1 (en)
AT (1) ATE65149T1 (en)
CA (1) CA1287394C (en)
DE (1) DE3583442D1 (en)
DK (1) DK171190B1 (en)
ES (1) ES8707839A1 (en)
FI (1) FI86941C (en)
IT (1) IT1187062B (en)
NO (1) NO169930C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3167153B2 (en) * 1991-09-30 2001-05-21 パイオニア株式会社 Speaker spacer
GB9317345D0 (en) * 1993-08-20 1993-10-06 Centralforce Ltd Loudspeaker
AUPS279202A0 (en) * 2002-06-05 2002-06-27 Sportzwhistle Pty Ltd Transducer mounting
JP5392335B2 (en) * 2011-10-12 2014-01-22 株式会社デンソー Vehicle presence reporting device
KR101451687B1 (en) * 2013-08-20 2014-10-22 임창수 two way speaker having coaxial effect
US11627416B2 (en) 2021-08-27 2023-04-11 Apple Inc. Two-way integrated speaker with piezoelectric diaphragm as tweeter

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52145215A (en) * 1976-05-28 1977-12-03 Nippon Gakki Seizo Kk Complex type speaker
JPS55154899A (en) * 1979-05-22 1980-12-02 Pioneer Electronic Corp Compound loudspeaker
US4283606A (en) * 1979-07-16 1981-08-11 Cerwin Vega, Inc. Coaxial loudspeaker system
JPS56112196A (en) * 1980-02-08 1981-09-04 Matsushita Electric Ind Co Ltd Composite type speaker
JPS5753798U (en) * 1980-09-11 1982-03-29
JPS5912699A (en) * 1982-07-13 1984-01-23 Matsushita Electric Ind Co Ltd Composite type speaker
US4475014A (en) * 1982-09-13 1984-10-02 Harman-Motive Inc. Acoustical transducer
JPS5963592U (en) * 1982-10-20 1984-04-26 フォスタ−電機株式会社 composite speaker

Also Published As

Publication number Publication date
ATE65149T1 (en) 1991-07-15
KR950002765B1 (en) 1995-03-24
FI862323A0 (en) 1986-05-30
EP0220354A3 (en) 1988-01-07
EP0220354B1 (en) 1991-07-10
FI86941B (en) 1992-07-15
CA1287394C (en) 1991-08-06
NO862429L (en) 1987-03-03
EP0220354A2 (en) 1987-05-06
IT8500625A0 (en) 1985-09-02
NO169930B (en) 1992-05-11
ES555745A0 (en) 1987-09-01
FI862323A (en) 1987-03-03
KR870003670A (en) 1987-04-18
NO169930C (en) 1992-08-19
DK171190B1 (en) 1996-07-15
JPH0738752B2 (en) 1995-04-26
DK251586D0 (en) 1986-05-29
FI86941C (en) 1992-10-26
JPS6253590A (en) 1987-03-09
IT1187062B (en) 1987-12-16
NO862429D0 (en) 1986-06-18
ES8707839A1 (en) 1987-09-01
DE3583442D1 (en) 1991-08-14

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Legal Events

Date Code Title Description
A0 Application filed
PBP Patent lapsed