JPS54108621A - Speaker - Google Patents

Speaker

Info

Publication number
JPS54108621A
JPS54108621A JP1604878A JP1604878A JPS54108621A JP S54108621 A JPS54108621 A JP S54108621A JP 1604878 A JP1604878 A JP 1604878A JP 1604878 A JP1604878 A JP 1604878A JP S54108621 A JPS54108621 A JP S54108621A
Authority
JP
Japan
Prior art keywords
diaphragm
bobbin
coil
sealing material
voice coil
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
JP1604878A
Other languages
Japanese (ja)
Inventor
Ryoichi Kawasaki
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.)
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Original Assignee
Tokyo Sanyo Electric Co Ltd
Sanyo Electric 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 Tokyo Sanyo Electric Co Ltd, Sanyo Electric Co Ltd filed Critical Tokyo Sanyo Electric Co Ltd
Priority to JP1604878A priority Critical patent/JPS54108621A/en
Publication of JPS54108621A publication Critical patent/JPS54108621A/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms

Landscapes

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

Abstract

PURPOSE:To enable sound source positions of a woofer and a tweeter to be matched by using a porous metal made diaphragm of a specific shape provided with sealing material on the front as a large diameter speaker. CONSTITUTION:A diaphragm which is a circular flat plate of truncated cone form in section and is composed of Ni porous material is bonded at its front with a sealing material 2 composed of Al foil for inhibiting its air permeability. The central hole 4 of the diaphragm 1 is fitted and fixed with the end part of a voice coil bobbin 3 wound with a voice coil 5 and is held by a damper 10. The diaphragm 1 is connected elastically to a frame 8 by means of an edge 7 and the hole 4 is closed by a dust cap 9. The coil 5 is driven by a magnetic circuit 6. The bobbin 3 is made of material of good heat conductivity such as of Al and the heat evolved in the coil 5 is released through the bobbin 3 and diaphragm 1. Since the diaphragm 1 is flat at its front, specified spherical waves are generated without any phase delay between the central part and circumferential edge part.
JP1604878A 1978-02-13 1978-02-13 Speaker Pending JPS54108621A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1604878A JPS54108621A (en) 1978-02-13 1978-02-13 Speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1604878A JPS54108621A (en) 1978-02-13 1978-02-13 Speaker

Publications (1)

Publication Number Publication Date
JPS54108621A true JPS54108621A (en) 1979-08-25

Family

ID=11905682

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1604878A Pending JPS54108621A (en) 1978-02-13 1978-02-13 Speaker

Country Status (1)

Country Link
JP (1) JPS54108621A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57166490U (en) * 1981-04-11 1982-10-20

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52111715A (en) * 1976-03-17 1977-09-19 Toshiba Corp Speaker device
JPS52133209A (en) * 1976-04-30 1977-11-08 Sumitomo Electric Ind Ltd Electrokinetic-type electricity/sound converter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52111715A (en) * 1976-03-17 1977-09-19 Toshiba Corp Speaker device
JPS52133209A (en) * 1976-04-30 1977-11-08 Sumitomo Electric Ind Ltd Electrokinetic-type electricity/sound converter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57166490U (en) * 1981-04-11 1982-10-20

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