Sony XS-W104ESNew ideas When you're looking for a new subwoofer, you want deep, rich bass. Sony's Mobile ES Series XS W104ES 10" sub is engineered from top to bottom with proprietary Sony technology to deliver low frequencies at high volume levels with minimal distortion, so you'll get the best bass possible. Into the cone zone The XS W104ES features a Mica Reinforced Cellular (MRC) cone, created for high rigidity, light weight and good internal loss. This material