The AC10D 10 inch subwoofer by Planet Audio is equipped with 1500 watts peak power and 750 watts RMS, this 10 inch subwoofer is perfect for someone looking to add that bit of bass to their car. Purchase two of them and wire them down to 1 ohm to get maximum power out of your digital amplifier The dual 4 Ohm 2 inch voice coil subwoofer provides more wiring configuration possibilities. If you add additional subwoofers, wiring configurations can be easily matched to optimize the amps power output. Power handling is also increased.