I have 4 VS-14's, 2 for my sides and 2 for the rear. The VS-14's are perfect for my current house, however I am moving soon and there is no clearance on the back wall for my rears. My question is, would it be okay to mount my rears on the ceiling firing straight down along the back wall? Would it be worth my while or would the sound be terrible? Any opinions would be much appreciated. Thanks in advance.