Pioneer TS-W311D4 (tsw311d4) 1400W 12" Champion Series Dual 4 ohm
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Pioneer TS-W312D4 | Car Entertainment, Subwoofers, Champion Series Subwoofer, Champion Series Red Subwoofer | Pioneer Middle East - Car Stereo, Car Subwoofer, Amplifier
TS-W310D4 - 12" Champion Series Subwoofer with Dual 4 Ω Voice Coils | Pioneer Electronics USA
Pioneer TS-W312D4 | Car Entertainment, Subwoofers, Champion Series Subwoofer, Champion Series Red Subwoofer | Pioneer Middle East - Car Stereo, Car Subwoofer, Amplifier