Polk HTS 12

The Polk HTS 12 subwoofer enhances home theater and music listening with powerful deep bass.
It features a long-throw Dynamic Balance 12” driver, patented Power Port® technology and a state-of-the-art 400W Class D amplifier.
Easily to access controls for volume, low pass filter, and phase correction. Connect via LFE (unfiltered / low pass disabled) or stereo line level RCA inputs.