The power rating on the sub is 700 watts on the Active version I have. The way I came up with 400 watts RMS is because the Passive version is 400 watts RMS, and I figured if the Passive version is 400 and they’re both using the same speaker (EVS-18K, 457mm (18″) Woofer). Then how could the Active be more powerful than the Passive and maybe they are giving more of a Peak wattage rather than an RMS wattage for the Active version. I did the same thing with the 12’s they’re rated at 1000watts on the active. Or was I all wrong with my assumption