Pioneer TS-WX210A 8-inch Active Underseat Subwoofer http://www.amazon.co.uk/dp/B0036YEWHO?tag=jm15-21 Feature * Maximum power 150 W * Frequency response 40 - 150 Hz * Sensitivity (1W/1m) 101 dB * IMPP composite cone woofer Incl remote control For horizontal and vertical use http://www.amazon.co.uk/dp/B0036YEWHO?tag=jm15-21