Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ELECTROACOUSTIC TRANSDUCER AND ELECTROACOUSTIC TRANSDUCING SYSTEM
Document Type and Number:
Japanese Patent JP2010124313
Kind Code:
A
Abstract:

To provide an electroacoustic transducer and electroacoustic transducing system, capable of coping with large amplitudes without causing reduction in the efficiency.

An electroacoustic transducer includes a magnetic circuit which is constituted of a magnet and a magnetic substance and includes a magnetic gap; a coil bobbin which is disposed in the magnetic gap and connected to a diaphragm; a plurality of voice coils 150a-150c wound at positions that differ in the axial direction on the coil bobbin; and switching circuits 201, 210 for supplying drive signals to a voice coil, with which the largest number of winding wires are included in the magnetic gap, among the plurality of voice coils.


Inventors:
MORITA YUICHI
Application Number:
JP2008296878A
Publication Date:
June 03, 2010
Filing Date:
November 20, 2008
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
FOSTER ELECTRIC CO LTD
International Classes:
H04R9/04; H04R3/00; H04R7/18
Domestic Patent References:
JP2004336098A2004-11-25
JP2000224694A2000-08-11
Attorney, Agent or Firm:
Fujiharu Ijima
Nobushige Samejima