Filter Filters 12" $50-$100 Remove All Filters Condition New (2) Brand Alpine (1) Subwoofer Boxes (1) Voice Coils Single (1) Receiver Size Yes 10-7-2015 (1) Car Audio Single 12" SPL Bass Subwoofer Labyrinth Vent Sub Box Stereo Enclosure $84.95 (1) Alpine W12S4 Car Audio BassLine Series Sub Single 4 Ohm 500W Peak 12" Subwoofer $99.95