Avman, the RP-5 towers to the R and L of the TV have the self powered subs built in the bottom, each with a 550w amp. Both subs are directed inward. I did have to build a very heavy duty shelf for the 30's and center. In the pic you can see the chain supports that tie into the truss above the ceiling. Wish I had a bigger entertainment room, I'd like to have the 30's down lower or even better, Khorns eventually.