The PSW111 Powered Subwoofer delivers powerful, accurate and musical bass from a shockingly small enclosure. Small enough to hide behind (or in) furniture or tuck into a corner, the PSW111 easily disappears from view. But its big bass output will never let you forget that it's there, delivering all the visceral gut rumble for your favorite action movies as well as tight, accurate bass precision for your music. The PSW111 represents a continuing refinement of the highly regarded PSW Series and a great introduction to visceral home theater bass performance. Its compact design is the perfect complement to Polk RM Series and SurroundBar loudspeakers.