Sound Storm Laboratories CG10D Charge Series 10 Inch Car Audio Subwoofer - 1000 Watts Max, Dual 4 Ohm Voice Coil, Sold Individually, For Truck Boxes and Enclosures, Hook Up To Amplifier - Walmart.com
Amazon.com: SSL Fs12 FORCE 12" Single 4 Ohm Voice Subwoofer, 500 Watts : Electronics