Roque, I have a suggestion if I may. Have you thought about moving your rear channel speakers in some more, rather than having them right against the corners. I would think you would get a more wider dispersion by moving them to the other side of the racks (more towards he center) than right on the corners. I of course am not there to hear what sounds better, but five minutes of your time and you may find moving them in some, may give you better results. I think in the corner would give you better bass response but early reflection points may hinder the sound more and you may suffer from cancellations. Otherwise very very nice.
