i was wondering how much of a diffrence 2 ohm or 4ohm sound. could i really tell a diffrence. i am going to buy a idmax and i dont know wich one to get (dual 2ohm and run it at 4ohm or dual 4ohm and run it at 2ohm) i know getting the dual 4 ohm will lower my sub amp cost but i dont want to risk losing sq.