| 摘要 |
PROBLEM TO BE SOLVED: To provide an electromagnetically coupled speaker capable of guiding magnetic fluxes more than generated by a woofer voice coil to an induction coil and improving the efficiency of a speaker for a tweeter. SOLUTION: In this composite type electromagnetically coupled speaker, a cutting part 17 is provided on the outer circumference of a yoke pole 11 close to the inner side of the wafer voice coil 15 and the induction coil 16 is wound around. Also, the induction coil 16 is formed by winding magnetic metal wiring around the cutting part 17 so as to prevent a decrease in a magnetic flux in a magnetic gap G of a magnetic circuit by providing the cutting part 17. COPYRIGHT: (C)2005,JPO&NCIPI
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