I would like to thank everyone that replied to my topics. I have one of my two 15" Diamond audio subs hooked up. My sub boxes came today and my amp is only big enough to push one sub so I hooked only one up. Man this thing shakes the ground I can't wait to get the other one hooked up. I had 2 12" JL audio's and this one 15 puts them to shame. MAN I'M HAPPY.