Pioneer TS-W312D4 | Car Entertainment, Subwoofers, Champion Series Subwoofer, Champion Series Red Subwoofer | Pioneer Middle East - Car Stereo, Car Subwoofer, Amplifier
Pioneer TS-W259S4 specifications
Pioneer TS-W310S4 Champion Series 12" 4-ohm subwoofer at Crutchfield
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TS-W310S4 - 12" Champion Series Subwoofer with Single 4 Ω Voice Coil | Pioneer Electronics USA