This is my setup...
http://i1345.photobucket.com/albums/p662/john_be_good/DSC04842_zpsc299eb4d.jpg

need to upgrade sub soon, due to space constraints do I go external amp & 1 sub or integrated amp & 2 subs, I do not have any space in the back or sides only the front.

in my rack I have pvr - dvd - mrx & beside rack; an xpa-5


7.1.4 * MRX1120 * M100s * 180HP * 4x M3-on walls * 4x M3-IC * dual XV15se * Shakers