I currently have front hight speakers hanging on custom sound Anchor racks 81" above the foor. The speakers i want to purchase to hang on the racks are JTR slanted 8's with a 30 degree baffle angle to them. What is the minimum seating distance for this type of speaker at that hight so that the sound is at ear level? Mounting the speakers on the wall or the ceiling is not an option at this point and my ceiling is only 8 feet high anyway. I'm affraid that with that baffle angle they will end up firing into my lap if they were angled towards the LP.