DESC: For an all-around awesome subwoofer that wont cost you an arm and a leg, check out Polks DSWpro550wi. This compact sub is packed with advanced features to provide superior sound from its 10 cone and efficient 400W amplifier. But its flexible too - you can choose to use it as either down-firing or forward-firing. With a separate kit, this impressive sub will even work wirelessly so you can place it wherever you choose.