Filter Filters 12" Alpine Remove All Filters Price $50-$100 (1) $100-$500 (10) $500 and above (4) Condition New (15) Voice Coils 2 Ohm (1) Dual (6) Single (1) Speaker Type 1-way (2) Alpine S2-W12D4 Car Audio Type-S Series Dual 4-Ohm 12 Inch Subwoofer $186.95 Alpine S2-W12D2 Car Audio Type-S Series Dual 2-Ohm 12 Inch Subwoofer $186.95 Alpine R2-W12D2 Next-Generation R-Series Dual 2-Ohm 750 RMS Watts 12" Subwoofer $379.95 Alpine R2-W12D4 Next-Generation R-Series Dual 4-Ohm 750 RMS Watts 12" Subwoofer $379.95 Alpine S-W12D4 Car Audio Type S Series Sub Dual 4 Ohm 1800W Peak 12" Subwoofer $199.95 Alpine S-W12D2 Car Audio Type S Series Sub Dual 2 Ohm 1200W Peak 12" Subwoofer $199.95 (1) Alpine W12S4 Car Audio BassLine Series Sub Single 4 Ohm 500W Peak 12" Subwoofer $99.95 Alpine R2-SB12V Single 12" Alpine Halo R2-Series Preloaded Subwoofer... $599.95 Alpine S-SB12V Single 12" Halo S-Series Preloaded Subwoofer Enclosure with... $449.95 Alpine R2-W12D2 Next Gen 12" Sub R-Series Dual 2-Ohm 750 RMS Includes... $379.95 Alpine R2-W12D4 Next Gen 12" Sub R-Series Dual 4-Ohm 750 RMS Includes... $379.95 Alpine SS-SB12 Car Audio S-Series 300W RMS 2-Ohm Downward-Firing 12" Loaded... $424.95 Alpine RS-SB12 Car Audio Halo R-Series 600W RMS 2-Ohm 12" Loaded Sub Box... $799.95