Title:
スピーカ
Document Type and Number:
Japanese Patent JP4735306
Kind Code:
B2
Abstract:
A magnetic circuit part of a loudspeaker is formed of a plate, a magnet, and a yoke. A step is disposed in the plate that comes into contact with a disc-like magnet and forms a magnetic gap. A loudspeaker is provided where the step moves a voice coil away from the leakage magnetic field of the yoke, the influence of the leakage magnetic field is eliminated even when the output is large, the distortion is small, and the sound quality is high.
Inventors:
Umemura Kazuyoshi
Application Number:
JP2006032236A
Publication Date:
July 27, 2011
Filing Date:
February 09, 2006
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
H04R9/02
Domestic Patent References:
| JP11196491A | ||||
| JP2004007332A | ||||
| JP56049188Y1 | ||||
| JP2133097U | ||||
| JP3247099A | ||||
| JP11510033A | ||||
| JP45033465B1 | ||||
| JP2003199192A |
Attorney, Agent or Firm:
Hiroki Naito
Daisuke Nagano
Kentaro Fujii
Daisuke Nagano
Kentaro Fujii