Alpine 12 Inch Subwoofers

Alpine W12S4 Bass Series 12 Inch Single Subwoofer

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Alpine S-W12D4 S-Series 12″ Dual 4 Ohm Subwoofer

Alpine S-W12D2 S-Series 12″ Dual 2 Ohm Subwoofer

Alpine R-W12D2 R-Series 12" Subwoofer with Dual 2-ohm voice coils

Alpine R-W12D4 R-Series 12" Subwoofer with Dual 4-ohm voice coils