Since getting new thick carpets and having loads of problem trying to spike the speakers onto the concrete floor-which I have not been able to, I am using granite under my speakers. I'm really disappointed with the overall sound, the bass is not tight as before, it's lost some attack and verve??? Music just seems muddled? Why is this? Is it because the neats have a downward firing port? I'm seriously thinking of selling my neats and buying some closed design like the atc scm11. Please help as I don't know what to do to get my sound that I enjoyed back?? :-(