PowerBass 3XL-1501D 15" Dual 1 ohm Car Subwoofer PowerBass 3XL-1501D 15" Dual 1 ohm Car Subwoofer Dual 1-ohm Voice Coils 3 Vented HD BASV Voice Coil Formers (RMS/Peak): 1000/2000 watts Mounting Depth: 9.37 in