| 摘要 |
PROBLEM TO BE SOLVED: To provide a speaker system wherein a low pass filter provided in a pre-stage of a voice coil can be downsized. SOLUTION: In the speaker system comprising a pulse amplifier 1 for amplifying an input digital signal and a speaker 2, the speaker 2 includes a magnet, a voice coil located in a magnetic field generated by the magnet, and signal wire lines used to supply a current on the basis of an output of the pulse amplifier 1 to the voice coil, wherein the signal wire lines are wound on the magnet, the low pass filter using the wire winding formed by winding the signal wire lines on the magnet is provided between the pulse amplifier 1 and the voice coil, and the low pass filter comprises the wire winding and capacitors C1, C2 in the speaker system. COPYRIGHT: (C)2007,JPO&INPIT
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