| 摘要 |
PURPOSE:To control a low-pitched sound and to improve a (f) characteristic without reducing a high band level by fitting an elastic body having a thin leaf-shaped or corrugated edge part at a circumference through an above- mentioned edge part to an upper most end of the voice coil bobbinor to the central part of the sub-cone. CONSTITUTION:A cone 1 having a dust cap 2 is fitted to a voice coil bobbin 4 supported to a suspension 3, and an elastic body 6 having a thin leaf-shaped edge part 5 is fitted through an edge part 5 to a voice coil bobbin 4. In the elastic body of the present invention, since a high band component is bypassed by a Cs of the edge part, an additional mass can be brought into interaction without reducing the high band level. |
