This is a high quality Koss Subwoofer. It features 6 Ohm Impedance, 100 Watt Power, a 7" woofer, Super Bass Woofer, and a Passive Design.
If you don't have a subwoofer then your ears don't know what they're missing when it comes to deep bass! Velodyne has a wall-shaking, earth-quaking 400 watts of dynamic power and 170 watts of RMS power. This subwoofer's black vinyl finish is attractive and blends nicley with your other electronic equipment.