| 摘要 |
PROBLEM TO BE SOLVED: To improve high frequency characteristics by disallowing a sound wave generated especially at a periphery of a coil bobbin fitting part of a speaker cone to appear in the front of a speaker since the sound wave with a disorderly phase generated at the periphery deteriorates high-frequency characteristics of the speaker. SOLUTION: In front of the cone, a cone-shaped reflector is fitted leaving a space of 1 to 4 mm parallel to the cone. The diameter of the reflector is a half as large as the diameter of the cone. The cone reflects the sound wave with the disorderly phase generated at the cone center part. COPYRIGHT: (C)2009,JPO&INPIT
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