Filter Filters Alpine Single Remove All Filters Price $50-$100 (2) $100-$500 (1) Condition New (3) Size 10" (2) 12" (1) Alpine SWT-10S4 Car Audio SWT Series Sub Single 4 Ohm 700W Shallow Subwoofer $186.95 Alpine W10S4 Car Audio BassLine Series Sub Single 4 Ohm 500W Peak 10" Subwoofer $89.95 Alpine W12S4 Car Audio BassLine Series Sub Single 4 Ohm 500W Peak 12" Subwoofer $99.95