Alpine 12 Inch Subwoofers

Alpine W12S4 Bass Series 12 Inch Single Subwoofer

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Alpine S2W12D2 12 inch Type S Series Subwoofer Dual 2 ohm

Alpine R2-W12D4 12" R - Series Dual 4 Ohm Subwoofer

Alpine S2W12D4 12 inch Type S Series Subwoofer Dual 4 ohm

Alpine R2-W12D2 12" 12-inch R-Series Subwoofer with Dual 2-Ohm Voice Coils

Alpine RS-W12D2: R-Series 12″ Shallow Profile Subwoofer with Dual 2 Ohm DVC for High Performance Bass

Alpine RS-W12D4: R-Series 12″ Dual 4 Ohm DVC High Performance Shallow Profile Subwoofer