Skar Audio VD-8 D2 8" 600W Max Power Dual 2 Ohm Shallow Mount Car Subwoofer 8-Inch Dual 2 Ohm Shallow Mount Subwoofer Peak Power: 600 Watts RMS Power: 400 Watts Shallow Mount Design - Mounting Depth: 3.94" Pressed Paper Cone Dual 2 Ohm Voice Coil Configuration Peak Power: 600 Watts RMS Power: 400 Watts Pressed Paper Cone High Roll Foam Surround 2&#034; High Temperature Copper Voice Coil Frequency Response: 55 - 500 Hz Sensitivity: 83.2 dB Xmax: 10.25 mm Mounting Depth: 3.94&#034;