The Y118S is a mid-sized, passive subwoofer utilizing Yorkville's proprietary acoustic loading technology, which was originally developed for our high-end élite LS608 subwoofer. Although it has a lower power rating than the élite version, the Y118S provides comparable performance in a highly cost effective package. This mid-sized bass cabinet uses an affordable 18" driver and is well suited for use in a wide variety of "bass-deprived" applications.