Pioneer 12" Single-Voice-Coil 4-Ohm Subwoofer Black TS-W306R - Best Buy
Pioneer A-Series 12" Preloaded Subwoofer System Loaded with TS-A300B in the Mobile Audio department at Lowes.com
Pioneer 12 Inch Sub Woofer DVC (1400w IMPP Composite Seamless Cone Dual-Layer Elastic Polymer Surround 14% Larger Surface Area than Previous Model for Louder and Higher Quality Bass Reproduction Extra-tough suspension for
Pioneer TS-1200M 12" - 1400 W Max Power, Single 4Ω Voice Coil, IMPP™ cone, Rubber Surround | Component Subwoofer - Walmart.com
Pioneer TS-W306DVC/XL/UC 12 inch 1000W Subwoofer 884938404716 | eBay