Kenwood 10 Inch 1300 Watt 4 Ohm Car Audio Power Stereo Subwoofer KFC-W2516PS - Walmart.com
Pioneer PRO Series 12" 1,500-Watt Subwoofer in the Mobile Audio department at Lowes.com
Kenwood XR-W12F 12" Oversized Shallow Subwoofer, 1500W Max Power - Creative Audio
Kenwood KFC-W3011 12" 4-ohm subwoofer at Crutchfield
Planet Audio 1800-Watt Subwoofer plus Boss 1500-Watt Amplifier with Amp Kit plus Q-Power Enclosure AC12D + AR1500M + AKS8 + QSBASS12-VENTED - The Home Depot