How does not enough power blow a sub? I agree stupid people blow them by setting the gains way too high, or are dumb with the volume knob, but no one has ever blown a sub by not having enough power to it. Also a w3v2 will get to xmax well before you get to its RMS power. I believe it only takes about 200 watts in a JL reccomended sealed box. After you reach x-max, adding more power does very little to increase output.