Alpine S-W10D4 S-Series 10" subwoofer with dual 4-ohm voice coils at Crutchfield
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S-1004D 10" Subwoofer
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TS-SW2502S4 - 10" Shallow-Mount Subwoofer with 1,200 Watts Max. Power | Pioneer Electronics USA
S/812 12 Inch Home Subwoofer | REL Acoustics
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Alpine Halo S-Series Single 10" Preloaded Subwoofer Enclosure with ProLink™ Black S-SB10V - Best Buy
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