Coustic subwoofers are designed to deliver high performance power at an unbeatable price. Polypropylene cone with excellent stiffness to weight ratio allows for high efficiency and high SPL. Large foam surround increases efficiency by further reducing weight. The all new Coustic subwoofers offer a solution for any enthusiast at an extreme value.
This is a nice RCA SP9905 Subwoofer. It features 8 Ohm Impedance, 30 Watt Maximum Input, and is Passive.