I'm thinking about mounting two of these in a gym facing bleachers. The gym is approximately 101x75x28. I'm planning on spacing the speaker about 30' apart from center court. When aiming the speaker what is the center? Does it change when in straight, J, Reverse J or C? To keep the sound off the wall and stage for events that require a stage I'm wanting to go reverse J. For all other event I would go with C to give more coverage on the floor. How even is the coverage from the center to the edge? I'm guessing the speakers will be about 25' on the wall.