The MP Audio SQL2010 Series 10-inch Dual 2 ohm shallow mount subwoofer by MP Audio was designed to be a very versatile and powerful driver. When space or mounting depth is an issue, look no further. The SQL2010 subwoofer is extremely powerful, rated at a conservative 500 Watts RMS power and featuring a high quality 2" high temperature copper voice coil. Furthermore, the SQL2010 Series is built utilizing only the highest quality parts, such as a competition grade cone, high strength foam surround and a 2 layer conex spider for high power handling. These components in conjunction with the advanced cooling design of this woofer allow it to fit in much shallower enclosures, yet allow it to perform with attitude. Max power: 800 Watts. RMS Power: 400 Watts. Fs: 40.0 Hz, Spl: 86 dB. Mounting Depth: 6.30"