A tower of bass without peer across the world of audio, the PC-4000 is an icon of SVS design innovation standing tall as the most sophisticated cylinder subwoofer SVS has ever developed. Room-energizing output and deep bass extension below the threshold of human hearing with less than half the floorspace required of comparable ported box subwoofers. An effortlessly powerful amplifier and driver combine with advanced DSP technology for a level of performance and user control not seen at this price before. The PC-4000 also comes standard with the SoundPath Subwoofer Isolation System for cleaner sounding bass with increased definition and more punch without room rattle and reduced bass bleed to the rest of the house.