This has been asked many times and everyone seems to have a different opinion. I have tried many places with QS4's and 8's and it find that about 8 inch off the ceiling works best for me. I dont like being able to locate the position of my surrounds and i find this is a great way to limit audible locating .

DOG is GOD spelled backwards.
What others think of me is none of my business.
M80 V3 MY GLOSS Cherry