Filter Filters Single 2 Ohm Remove All Filters Price $50-$100 (1) $100-$500 (2) Condition New (3) Brand Harmony Audio (3) Size 12" (2) 15" (1) Sensitivity 87.3dB (1) 87.dB (1) 88.2dB (1) Harmony Audio HA-FT12 Car Stereo Flatline Loaded 12 Truck 800W Sub Box Enclosure $99.95 Harmony Audio HA-RS12 Car Stereo Rhythm Loaded 12" Vented 600W Sub Box Enclosure $109.95 (1) Harmony Audio HA-RS15 Car Stereo Rhythm Loaded 15" Vented 900W Sub Box Enclosure $139.95 (1)