| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to easily position respective primary coils and to improve the fitting strength of the primary coils. SOLUTION: The speaker unit is provided with a bobbin 14 fixed on a diaphragm 4, a york 2 with a positioning part 8 and forming a magnetic circuit together with a magnet 3, primary coils 16, 17 arranged in a magnetic gap 13 and capable of receiving a voice signal, and a secondary coil 15 fit to the bobbin 14 and arranged in a magnetic gap 13. Cylindrical bodies 18, 19 are provided to the respective one-end parts of which are respectively connected to the primary coils 16, 17 and the other end parts of which are connected to the positioning part 8 of the york 2.
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