JPS5549097A - Speaker unit - Google Patents

Speaker unit

Info

Publication number
JPS5549097A
JPS5549097A JP12295878A JP12295878A JPS5549097A JP S5549097 A JPS5549097 A JP S5549097A JP 12295878 A JP12295878 A JP 12295878A JP 12295878 A JP12295878 A JP 12295878A JP S5549097 A JPS5549097 A JP S5549097A
Authority
JP
Japan
Prior art keywords
hole
resonator
resonance
center pole
helmholt
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
JP12295878A
Other languages
Japanese (ja)
Inventor
Takashi Sakakibara
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP12295878A priority Critical patent/JPS5549097A/en
Publication of JPS5549097A publication Critical patent/JPS5549097A/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • 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 

Landscapes

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

Abstract

PURPOSE:To remove definitely acousting resonance caused by a through hole by equalizing resonance frequencies by forming a Helmholt resonator in the through hole of the center pole of a dome type or plane diaphragm type speaker. CONSTITUTION:Center pole 11 of a speaker is provided with pole yoke 11a and a magnetic circuit is composed of magnet 12, plate 13, etc.; and voice coil 15 wound around voice coil bobbin 14 is arranged in the air gap of the magnetic circuit and plane diaphragm 16 is fixed to the end part of bobbin 14. Then, through hole 17 is formed along the axial core wire of center pole 11 and Helmholt resonator 20 is fitted at an edge at the yoke-11a side of through hole 17. This resonator 20 is composed of window hole 21 linked to through hole 17 and cavity part 23 linked to opening part 22 formed at the circumference of this hole 21, and resonance frequencies are equalized by this cavity part 23, so that ocoustic resonance by through hole 17 will definitely be removed.
JP12295878A 1978-10-05 1978-10-05 Speaker unit Pending JPS5549097A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12295878A JPS5549097A (en) 1978-10-05 1978-10-05 Speaker unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12295878A JPS5549097A (en) 1978-10-05 1978-10-05 Speaker unit

Publications (1)

Publication Number Publication Date
JPS5549097A true JPS5549097A (en) 1980-04-08

Family

ID=14848828

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12295878A Pending JPS5549097A (en) 1978-10-05 1978-10-05 Speaker unit

Country Status (1)

Country Link
JP (1) JPS5549097A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9664119B2 (en) 2015-01-09 2017-05-30 Wen-Chuan Chen Gas flow adjusting device
GB2566829A (en) * 2017-09-26 2019-03-27 Premium Loudspeakers Hui Zhou Co Ltd Dome tweeter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53146614A (en) * 1977-04-09 1978-12-20 Licentia Gmbh Dynamic transducer with vibration coil in gap filled with magnetic fliquid

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53146614A (en) * 1977-04-09 1978-12-20 Licentia Gmbh Dynamic transducer with vibration coil in gap filled with magnetic fliquid

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9664119B2 (en) 2015-01-09 2017-05-30 Wen-Chuan Chen Gas flow adjusting device
GB2566829A (en) * 2017-09-26 2019-03-27 Premium Loudspeakers Hui Zhou Co Ltd Dome tweeter
CN109561368A (en) * 2017-09-26 2019-04-02 惠州超声音响有限公司 Hard sphere top high pitch loudspeaker
GB2566829B (en) * 2017-09-26 2020-03-25 Tymphany Acoustic Tech Huizhou Co Ltd Dome tweeter
CN109561368B (en) * 2017-09-26 2023-08-11 惠州迪芬尼声学科技股份有限公司 Hard ball top high pitch loudspeaker

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