davidrolson, forgive me if you already know this. Room treatments generally address damping (absorbing) or redirecting sonic reflections. if you do some research, you'll have a good handle on what your room "needs" Many of us have made absorption panels with OwensCorning foam insulation installed in frames with nice fabric covers. It sounds like you've made the first step to realize you want to treat your listening room; many never do that and IMO that's the primary building block to a good listening experience. Good luck.
What are the best Room Accustic Treaments members have found?
I am looking into adding some room acoustic treatments to my room. I am just looking for advice on some simple room treatments that fellow members found worthy of purchase.