1 Buy = 2 Subwoofers! This subwoofer delivers 2100 watts at max power, providing deep bass and loud crisp sound without any distortion. It features a dual 4-Ohm voice coil, that sits in a poly injected cone. It has power handling capability of 1050 watts RMS as well and this subwoofer is equipped with competition style binding posts. Plus it has a mounting diameter of 10 inches and a depth of 6 1/2 inches.