Polk Audio PSW10 10" Powered Subwoofer Good used condition.. minor cosmetic scuffs, excellent performance.. deep bass output Description: Add deep bass excitement and extended dynamic thrills to your music or movie sound system with the easy-to-connect and easy-to-use PSW 10. Its 10" Dynamic Balance composite cone driver and non-resonant enclosure produces deep, smooth response with superior detail and accuracy, while limiting distortion. The sub is powered by a high-current amplifier producing 50 Watts RMS/100 Watts dynamic power. A rotary volume control adjusts the volume of the subwoofer relative to the other speakers in the system and the unit offers a continuously variable low-pass filter, adjustable from 80-160 Hz. Easily accessible, professional-grade line- and speaker-level inputs, and speaker level outputs, allow easy connection to any system.