Amazon.com: Pioneer TSW312D4 Champion Series 12" 1500 Watt Dual 4 Ohm Voice Coil DVC Car Subwoofer : Electronics
Pioneer Champion Series TS-A301D4 1600 Watts 12 inch Dual 4 Ohm Subwoofer | Reverb
Pioneer Premier TS-W3002D2 at Onlinecarstereo.com
Amazon.com: PIONEER TS-W1200PRO PRO Series 12" 1,500-Watt Subwoofer : Electronics
Pioneer TS-W3002D2 Champion Series Pro 12" sub with dual 2-ohm voice coils at Crutchfield
Pioneer TS-W3002D2 12 In. Champion Series PRO Subwoofer with 3500 Watts | Amazon price tracker / tracking, Amazon price history charts, Amazon price watches, Amazon price drop alerts | camelcamelcamel.com
Pioneer TS-W3002D4 12 Inch Champion Series PRO Subwoofer with 3500 Watts Max. | eBay