I am with you Boomzilla the 8033 is a great little unit,I use one in my bedroom with a pair of 8" Yamaha subs and it does wonders. The bass is much tighter = less boomy. In my main room I have a XMC-1 from Emotiva with Dirac and use a Minidsp for phase alignment. Something I have found is that using dual subs that are not positioned correctly can have all kinds of phase issue, in the end I put one at the front right and one at the front left. May build a pair of 18's this summer.

DOG is GOD spelled backwards.
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M80 V3 MY GLOSS Cherry