Kenwood Road Series 12" Single-Voice-Coil 4-Ohm Subwoofer Black KFC-W120SVC - Best Buy
Polk™ Subwoofers for Home Theater Systems | Polk Audio™
EVL-12 | 12" 2,500 Watt Max Power Car Subwoofer - Skar Audio
JBL BassPro 12 | 12" (300mm) Car Audio Powered Subwoofer System with Slipstream Port Technology
Amazon.com: Massive Audio SUMMOXL124-12 Inch Car Audio Subwoofer, High Performance Subwoofer for Cars, Trucks, Jeeps - 12" Subwoofer 1500 Watt RMS, 3000w MAX Dual 4 Ohm, 3 Inch Voice Coil. Sold Individually : Electronics