Polk Audio DSW Pro 550WI Subwoofer

Key Features: – Designed and engineered for perfect volume, minutely tuned for distortion-free low frequencies, and internally braced and damped to eliminate internal standing waves and other performance-robbing resonances – Uses power more efficiently and knows when to stand down (especially at low volumes or in “Standby” mode); even at extreme listening levels, it’s a wonder of digital high efficiency, bullet-proof reliability and minimal heat generation – Feed forward distortion suppression technology enables you to set your performance limits much higher than normal, much closer to the actual (theoretical) maximum output of the subwoofer, with no risk of excessive distortion or damage – Klippel distortion analyser optimises the woofer’s motor structure, voice coil alignment and suspension for smooth for unimpeded movement over a broad spectrum of the lower frequencies to ensure the best, most efficient performance even at extreme listening levels