Filter Filters $100-$500 15" Remove All Filters Condition New (4) Brand Harmony Audio (3) Subwoofer Boxes (1) Voice Coils Dual (1) Sensitivity 89.4 dB (1) Receiver Size Yes 10-7-2015 (1) Car Audio Dual 15" SPL Bass Subwoofer Labyrinth Vent Sub Box Stereo Enclosure $179.95 Harmony Audio HA-RS15 15" Vented 900W Loaded Enclosure with Harmony Audio... $190.99 Harmony Audio HA-A152 Car Stereo Alloy Series 15" Sub 1500W Dual 2 Ohm... $209.99