Boss AR12D 12-Inch 4800 Watt Dual 4-Ohm Voice Coil Subwoofers (Pair) MAX Power: 2400 Watts per sub (4800 watts per pair) RMS Power: 1200 Watts @ 4 Ohms per sub (2400 watts per pair) Size: 12 in. Type: Stand Alone Frequency Response: 28 to 1.5 Hz