Pioneer TS-W311D4 Champion Series 12" subwoofer with dual 4-ohm voice coils at Crutchfield
Pioneer TS-W311 - 12" Subwoofer
Pioneer TS - W311D4 Subwoofer - L.A. Car Accessories
Pioneer TS-W312D4 | Car Entertainment, Subwoofers, Champion Series Subwoofer, Champion Series Red Subwoofer | Pioneer Middle East - Car Stereo, Car Subwoofer, Amplifier
Pioneer TS-W311D4 Champion Series 12" subwoofer with dual 4-ohm voice coils at Crutchfield