If you're looking to enhance the bass in your stereo system, consider the Polk Audio PSW111 8" 300W Subwoofer. Its compact design complements just about any speaker setup, providing up to 300W of output. It features Klippel Distortion Analyzer technology, optimizing the woofer's motor structure, voice coil alignment, and suspension to provide clean, accurate bass from 36 to 250 Hz.
Moreover, Polk Audio's PSW111 offers an 8" reinforced multi-range, composite woofer, adjustable low-pass crossover, a phase switch, and subwoofer volume control. Connections include line and speaker-level inputs. Signal-sensing technology powers the subwoofer on and off in line with your system.