What's up guys? This is my first post but I've always been a big fan of this forum... But, I've got a problem. I just got my system installed in my new car. I have 2 re audio sxx powered off of an arc audio ks1200.1 and an arc audio ks1000.1. ( had 2 ks 1000.1's but when there was a problem recently they sent me a new ks1200 instead.) Anyway, one of the subs works perfect, but the other bottoms out on every low note. The amp settings on that sub are turned down to where it hardly even moves with high bass. But when it hits the low note it still bottoms out. Also it seems like the sub is kind of pulling in instead of pushing out. And yes everything is wired correctly and the phase on the amp is correct as well. I am stumped.. also if I'm looking for more spl, would 2 aq1200d's be louder than the arc's? I could sell the arc's used for well over the amount of 2 new aq1200d's. I'm just going for spl in this build. And the subs are in a 4 cu ft ported box tuned right around 30 hz in the hatch of a 350z. Thanks for the help!