Filter Filters Subwoofer Boxes 15" Remove All Filters Price $50-$100 (1) $100-$500 (1) Condition New (2) Receiver Size Yes 10-7-2015 (2) Car Audio Dual 15" SPL Bass Subwoofer Labyrinth Vent Sub Box Stereo Enclosure $179.95 Car Audio Single 15" SPL Bass Subwoofer Labyrinth Vent Sub Box Stereo Enclosure $99.95 (1)