Based on the Brahma, consider the Brahma X an eXtreme Brahma! Everything has been stepped up a notch and then some! The Brahma X uses patent XBL^2 technology which allows it to set a new benchmark in terms of linear sound quality and SPL capability. Designed for extreme SQ/SPL situations, it features dual 2 or 4 ohm voice coils (1/2/4/8 ohm wiring options), 1500W RMS power handling, a 3" diameter aluminium voice coil, and other state-of-the-art technology. Big SPL isn't a problem at all.Brahma Mark 2.5 also delivers world-class sound quality. This unique design greatly reduces the distortion, lowers inductance, and increases overall linearity of the driver. At 5mm, or 20mm of excursion, the Brahma X still sounds consistent. XBL^2 motors provide for exceptional stroke And extreme sound quality, all with a rugged, high power handling design.