| 摘要 |
PURPOSE:To improve the size of gap of slits and the accuracy of size among equalizer pieces and to reduce the variance in high frequency characteristics, by coupling the equalizer pieces with the insertion between the projection and the recess between the inner and the outer circumferences and forming equalizers. CONSTITUTION:Plural equalizers 11a-11f are provided with cylindrical projections 13 on the outer circumference at each 1/4-position in axial symmetry, and the inner circumference is provided circular recesses 14 in parallel with the center axis of the equalizer pieces 11a-11f corresponding to the projections. The equalizer 11 provided with concentric slits 12a-12e is formed as a whole. The size of the outer diameter of the projection 13 and the size of the inner diameter of the recess 14 are mated, allowing to minimize a play. |
