2 X10"Subwoofer Box Durable Black Carpet 2"(BASV)Voice Coil 40 oz Magnet Impedance:4 Ohm Stereo MAX Power:550 Watts 2X12"Subwoofer Box Durable Black Carpet 2"(BASV)Voice Coil 50 oz Magnet Impedance:4 Ohm Stereo MAX Power:650 Watts