I don't care about your friend and his penus. Just wrap those pubes tightly around your hands and hug away.
But please, tell me all about your penus' s system. So he has 6 12's, wired down to what load? What amp is he running? What's his electrical? Now since you have to keep butting in while I'm trying to help somebody get the most out of their system.... I need to hear all about your tnt 12's and your big plans. And please tell me how you are going to insure they see 800 watts. Better make that 4th order smaller so it can handle the wattage....
And please tell me how any of this is helping the op with his original question. The amp he has is known for doing close to rated. He needs to get as much of that out of it as possible. Right now he is at 62% of rated which is odd for that amp. I also have a pac plug and play output on my stock head unit. It took me a while to get it gained in correctly so that my amp would function at its best. Op, does your pac unit have a gain or any adjustments? If the signal coming off the pac is really weak then the amp has a harder time amplifying that signal. May be why you are getting dirty so quickly. have you scoped your rca's and checked the voltage on them?