Loaded Sub Boxes Filter Sort Filters In Stock Availability In Stock Price $50-$100 (1) $100-$500 (7) $500 and above (1) RMS Power 200-500 (3) 500-1000 (1) Peak Power 500-1000 (3) 1000-2000 (1) Size 12" (6) 15" (3) Voice Coils Dual 2 Ohm (1) Single 2 Ohm (3) Mounting Depth 7-9.99" (1) Over 10" (7) Sensitivity 87.3dB (1) 87.dB (1) 88.2dB (1) 91.2dB (1) Sort SKU: A-Z SKU: Z-A Price: Low to High Price: High to Low Least Popular Most Popular Sort by: SKU Sale Price Popularity Harmony Audio HA-C1X12D2 Universal Single 12" Carbon Series Vented Loaded... $269.95 Harmony Audio HA-C2X12D4 Universal Dual 12" Carbon Series Vented Loaded 2200W... $439.95 Harmony Audio HA-C1X15D2 Universal Single 15" Carbon Series Vented Loaded... $319.95 Harmony Audio HA-RS15 15" Vented 900W Loaded Enclosure with Harmony Audio... $190.99 Harmony Audio HA-ML2X12D1 Universal Dual 12" Monolith Series Subwoofer 3000W... $699.95 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-RD12 Car Rhythm Loaded Dual 12" Vented 1200W Sub Box Enclosure $194.95 (1) Harmony Audio HA-RS15 Car Stereo Rhythm Loaded 15" Vented 900W Sub Box Enclosure $139.95 (1)