ok my friend has 2 12" kicker comp vr and i told him to buy a hifonics bx1500 off of ebay, but instead a guy at a local car audio shop sells him a 250.2 kicker kx series. Im trying to tell him its not enough to power the subs but the guy at the store told him all he needed was a capasitor. i would like to know if the kicker kx 250.2 is enought to power the subs, and will the capasitor help any on that amp?