TS-W2502D2|D4 - 10" Champion Series PRO Subwoofer with 3000 Watts Max. (800 Watts Nom.) | Pioneer Electronics USA
TS-W260D4 - 10" Champion Series Subwoofer with Dual 4 Ω Voice Coils | Pioneer Electronics USA
Champion Series | Pioneer Middle East - Car Stereo, Car Subwoofer, Amplifier
TS-W3002D4 - 12" Champion Series PRO Subwoofer with 3500 Watts Max. (1000 Watts Nom.) | Pioneer of Canada - English
Pioneer Electronics on X: "The Champion Series Subwoofers feature an enclosed basket structure that is designed to support the steel basket by reducing the spread of vibration that causes bass loss frequency. #
Amazon.com: Pioneer TSW312D4 Champion Series 12" 1500 Watt Dual 4 Ohm Voice Coil DVC Car Subwoofer : Electronics
Pioneer TS-A301D4 at Onlinecarstereo.com
PIONEER TS-W311S4 CHAMPION SERIES 12" 4-OHM SUBWOOFER 1,400 WATT (400 W RMS) NEW | eBay