I don't know that I'm having problems per se, I just don't want to miss anything. Take Guardians of the Galaxy for instance, at the beginning where Star Lord is on the planet and geysers are going off all around him, it seems to me that there should be some oomph, but hardly any thump. Again in edge of tomorrow, that low end sweep at the very beginning, the Marty rocks the house. Also Godzilla hits crazy hard. Take Transformers 4, beginning with the little Dino, where the alien pushes the pulse thingy and it sends out nice thump that shakes the house. By the way, the rear PAs are stacked and level matched, they are about 4-1/2 to 5 feet away from the MLP, the front PA is about 6 foot away as is the Marty.