JPS5632900A - Flat-plate speaker - Google Patents
Flat-plate speakerInfo
- Publication number
- JPS5632900A JPS5632900A JP10808679A JP10808679A JPS5632900A JP S5632900 A JPS5632900 A JP S5632900A JP 10808679 A JP10808679 A JP 10808679A JP 10808679 A JP10808679 A JP 10808679A JP S5632900 A JPS5632900 A JP S5632900A
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- cone
- circumference
- nodal
- fixed
- 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
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 widen the band on the whole by equalizing force applied to a cone and that applied to each nodal circle of a diaphragm by equalizing the semivertical angle of each driving cone so that nearly equal force will be applied to nodal circles of a circular plane diaphragm. CONSTITUTION:Circular plane diaphragm 1, supported by edge 2 at its circumference, of D1 in diameter and even thickness, and cone 11 large and cone 12 small in semivertical angle fixed at their circumferences to nodal circles generated when this diaphragm 1 is excited while its circumference is made free are provided. Further, voice coil 4 is fixed to one terminal, and bobbin 3 with internal circumferential parts of cones 11 and 12 fixed to the other terminal and spider 13 support the circumference of bobbin 3 are provided to constitute the vibration system. Further, magnetic gap 17 covering coil 4 is provided and the magnetic circuit is composed of pole plate 5, magnet 6 and external yoke plate 7. Then, force transmitted to cones 11 and 12 and force applied to each nodal circle of diaphragm 1 are nearly equalized, thereby widening the band on the whole.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10808679A JPS5632900A (en) | 1979-08-27 | 1979-08-27 | Flat-plate speaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10808679A JPS5632900A (en) | 1979-08-27 | 1979-08-27 | Flat-plate speaker |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5632900A true JPS5632900A (en) | 1981-04-02 |
Family
ID=14475510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10808679A Pending JPS5632900A (en) | 1979-08-27 | 1979-08-27 | Flat-plate speaker |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5632900A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2520962A1 (en) * | 1982-02-04 | 1983-08-05 | Philips Nv | FLAT MEMBRANE TRANSDUCER AND METHOD FOR PRODUCING THE TRANSDUCER |
JPS5928796A (en) * | 1982-08-11 | 1984-02-15 | Kuraisuraa Denki Kk | Speaker |
JP2007251516A (en) * | 2006-03-15 | 2007-09-27 | Minebea Co Ltd | Speaker |
US7916878B2 (en) | 2004-04-16 | 2011-03-29 | New Transducers Limited | Acoustic device and method of making acoustic device |
-
1979
- 1979-08-27 JP JP10808679A patent/JPS5632900A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2520962A1 (en) * | 1982-02-04 | 1983-08-05 | Philips Nv | FLAT MEMBRANE TRANSDUCER AND METHOD FOR PRODUCING THE TRANSDUCER |
JPS5928796A (en) * | 1982-08-11 | 1984-02-15 | Kuraisuraa Denki Kk | Speaker |
US7916878B2 (en) | 2004-04-16 | 2011-03-29 | New Transducers Limited | Acoustic device and method of making acoustic device |
JP2007251516A (en) * | 2006-03-15 | 2007-09-27 | Minebea Co Ltd | Speaker |
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