First, if I stand at my front mains and clap my hands, I hear a spring. But, if someone else stands there and claps, it's very dead at my listening position. Is that normal?
Secondly, from the listening position, everything sounds dead except for my front heights way up there on the ceiling. They sound like a spring bouncing all over. I'm not sure if it's the corners, or the flat walls themselves.
Any thoughts on where to place treatment? I obviously want it to look good, and that's where I'm running out of ideas. I'd think anything on the front sloped ceiling would just be a distraction to the picture below and wash of light that projects on it.
Obviously not a square room.