Adds a full octave of clean deep bass, near field down to 30 Hz * Patented Magnetic Drive Woofer driven by 30 watts built-in and augmented by 2 passive drivers * Connect to Soundmatters foxL via its sub out or to other speakers using foxLO"s full-range audio output * Audio input with variable Bass Level, switchable limiter, and Power LED * Use on the desktop or floor, orient vertically or horizontally