PSW111 is best matched for RM and SurroundBar series or compact speakers from other manufacturers. You can put it practically anywhere and you won't believe the punch such a small subwoofer packs. That's why cnet says "the deep bass was impressively deep for a sub as small as the PSW111." You can even play hide and seek with it. All woofers feature a floor coupled downward firing port. This configuration brings you maximum bass impact while keeping the front of the cabinet as low profile as possible. Polk home subwoofers are provided with CEA-2010 "Loud and Low" Spec. Instead of using the usual "inches and watts" method, we've leveled the playing field so you can easily and accurately compare the performance of different subwoofers measured the same way.