Skar Audio VD-12 D4 12" 800W Max Power Dual 4 Ohm Shallow Mount Car Subwoofer 12-Inch Dual 4 ohm Shallow Mount Subwoofer Peak Power: 800 Watts RMS Power: 500 Watts Shallow Mount Design - Mounting Depth: 4. 92" Pressed Paper Cone | Sensitivity: 85.9 dB Dual 4 Ohm Voice Coil Configuration Peak Power: 800 Watts RMS Power: 500 Watts Pressed Paper Cone High Roll Foam Surround 2&#034; High Temperature Copper Voice Coil Frequency Response: 35 - 300 Hz Sensitivity: 85.9 dB Xmax: 11 mm Mounting Depth: 4.92&#034;