Anyone have advice to tone down reflective noise in my HT rm. I like the idea of sound panels but would like to do something myself or invove the wife. Also, are there tests I need to do to determine the probem areas? I was just going to accent the large open wall spaces that I could.. Is the ceiling an issue, and can it also be utilized to dampen reflections..? Thank you! -Of coarse filling the area with stuff will help too.. I have big open spaces adjacent to my HT rm.