Active subwoofer that was designed to fulfil two purposes – the first is to add seriously loud lows to your sound at solid volumes, the second is to massage your body with its powerful 650W power output at 4 Ohms. It provides frequency range of 40 Hz-125 Hz and sensitivity of 98 dB. It also offers phase switching. The enclosure is made of 15mm thick wood and features 4 caster wheel.