Pioneer Electronics on Twitter: "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. #
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2) Pioneer TS-W3003D4 4000 Watt 12" Car Subwoofers+Dual Vented Sub Enclosure Box
Pioneer TS-W3003D4 12" Champion Series Pro Subwoofer With 2000 Watts Max Power - Dual 4 ohm
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PIONEER TS-W3003D4 12" 2000W MAX CHAMPION PRO DUAL 4 OHMS SUBWOOFER CAR SUB 884938234610 | eBay
TS-W310D4 - 12" Champion Series Subwoofer with Dual 4 Ω Voice Coils | Pioneer Electronics USA
New PIONEER TS-W3003D4 12" 2000W MAX CHAMPION PRO DUAL 4 OHMS SUBWOOFER CAR SUB 884938234610 | eBay
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Pioneer TS-W3003D4 12" Champion Pro Series 2000W Subwoofer + Ported Enclosure
Pioneer TS-W3002D4 12" Champion Series Pro Subwoofer With 3500 Watts Max Power - Dual 4 ohm
Unboxing and review of Pioneer Champion Pro TS-W3003D4 subwoofer.Heavy built quality made in Vietnam - YouTube
Pioneer TS-W2501D4 25cm 2000w max power, RMS 800watts 10" Subwoofer - TSW-2501D4 from Pioneer