JPS5476132A - Electro-dynamic type speaker - Google Patents
Electro-dynamic type speakerInfo
- Publication number
- JPS5476132A JPS5476132A JP14272077A JP14272077A JPS5476132A JP S5476132 A JPS5476132 A JP S5476132A JP 14272077 A JP14272077 A JP 14272077A JP 14272077 A JP14272077 A JP 14272077A JP S5476132 A JPS5476132 A JP S5476132A
- Authority
- JP
- Japan
- Prior art keywords
- voice coil
- auxiliary coils
- bobbin
- speaker
- electro
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
PURPOSE:To control excess amplitude, protect the speaker against over-input and prevent damaging by additionally providing shorted auxiliary coils on the voice coil bobbin of the electro-dynamic type speaker. CONSTITUTION:A cone 1 and spider 4 are secured to the top end part of the bobbin 2 wound with a voice coil 3. The circumferential part of the spider 4 is secured to a frame 9 to form the vibrating system of the speaker. Auxiliary coils 10-1, 10-2 of 1 to several turns separate from the voice coil 3 are wound to both edges of the voice coil 3 on the abovementioned bobbin 2, with the respective coil ends being shorted. The additional provision of the auxiliary coils in this way causes the bobbin 2 to receive electromagnetic braking and excess vibrations to be controlled by the mutual action of the current and magnetic field induced in the auxiliary coils when the vertical amplitudes of the bobbins 2 become excessive owing to the over-input to the voice coil 3 and the auxiliary coils 10-1, 10-2 enter the magnetic field of the magnetic circuit 6 consisting of the magnets 8 and yoke 7.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14272077A JPS5476132A (en) | 1977-11-30 | 1977-11-30 | Electro-dynamic type speaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14272077A JPS5476132A (en) | 1977-11-30 | 1977-11-30 | Electro-dynamic type speaker |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5476132A true JPS5476132A (en) | 1979-06-18 |
Family
ID=15322000
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14272077A Pending JPS5476132A (en) | 1977-11-30 | 1977-11-30 | Electro-dynamic type speaker |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5476132A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5489618A (en) * | 1977-12-14 | 1979-07-16 | Matsushita Electric Ind Co Ltd | Speaker system |
JPS583695U (en) * | 1981-06-29 | 1983-01-11 | パイオニア株式会社 | electrodynamic speaker |
JPS6116696A (en) * | 1984-07-02 | 1986-01-24 | Pioneer Electronic Corp | Speaker device |
EP0903961A2 (en) * | 1997-09-22 | 1999-03-24 | Jbl Incorporated | Inductive braking in a dual coil speaker driver unit |
WO2011151546A1 (en) * | 2010-06-04 | 2011-12-08 | Focal Jmlab | Acoustic loudspeaker |
CN112423207A (en) * | 2019-08-23 | 2021-02-26 | 迪芬尼声学科技股份有限公司 | Loudspeaker, and voice coil driving system and driving method of loudspeaker |
EP4380191A1 (en) * | 2022-12-01 | 2024-06-05 | Alps Alpine Co., Ltd. | Speaker |
-
1977
- 1977-11-30 JP JP14272077A patent/JPS5476132A/en active Pending
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5489618A (en) * | 1977-12-14 | 1979-07-16 | Matsushita Electric Ind Co Ltd | Speaker system |
JPS6024634B2 (en) * | 1977-12-14 | 1985-06-13 | 松下電器産業株式会社 | speaker system |
JPS583695U (en) * | 1981-06-29 | 1983-01-11 | パイオニア株式会社 | electrodynamic speaker |
JPS6116696A (en) * | 1984-07-02 | 1986-01-24 | Pioneer Electronic Corp | Speaker device |
JPH0632543B2 (en) * | 1984-07-02 | 1994-04-27 | パイオニア株式会社 | Speaker device |
EP0903961A3 (en) * | 1997-09-22 | 2006-10-18 | Jbl Incorporated | Inductive braking in a dual coil speaker driver unit |
EP0903961A2 (en) * | 1997-09-22 | 1999-03-24 | Jbl Incorporated | Inductive braking in a dual coil speaker driver unit |
WO2011151546A1 (en) * | 2010-06-04 | 2011-12-08 | Focal Jmlab | Acoustic loudspeaker |
FR2961053A1 (en) * | 2010-06-04 | 2011-12-09 | Focal Jmlab | ACOUSTIC SPEAKER |
US8917898B2 (en) | 2010-06-04 | 2014-12-23 | Focal Jmlab | Acoustic loudspeaker |
CN112423207A (en) * | 2019-08-23 | 2021-02-26 | 迪芬尼声学科技股份有限公司 | Loudspeaker, and voice coil driving system and driving method of loudspeaker |
US11240618B2 (en) * | 2019-08-23 | 2022-02-01 | Tymphany Acoustic Technology Limited | Loudspeaker with dynamically controlled pairs of voice coil sections |
CN112423207B (en) * | 2019-08-23 | 2022-08-05 | 迪芬尼声学科技股份有限公司 | Loudspeaker, and voice coil driving system and driving method of loudspeaker |
EP4380191A1 (en) * | 2022-12-01 | 2024-06-05 | Alps Alpine Co., Ltd. | Speaker |
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