Cerwin-Vega Mobile Vega Series DVC Subwoofer (12-Inch, 1,300 Watts, Dual 2 Ohms/4 Ohms) - Walmart.com
JBL IRX115S 1300-Watt 15" Active Subwoofer | Reverb
Sony XS-L124P5B 12" 4-ohm subwoofer at Crutchfield
Amazon.com: PIONEER TS-WX1210AM - Powerful 12-inch Active Subwoofer with Built-in Amplifier, 1300 Watts Peak Power, and Compact Design for Deep Bass : Electronics
PIONEER TS-W306R 12" SUBWOOFER WITH IMPP™ CONE 1300 WATTS MAX POWER (350 W RMS) | eBay