If you place them at the first reflection points it should help, to find first reflection take a mirror and run it down your wall and when you can see the speaker in mirror you place panel there. I have panles at reflections, corner treatments (which I would get if I were you) and for now I have matching fleece blankets on rear wall 'till I can afford more panels. This is my idea for you to try and others will have their own opinions so you should get good advice all around, audiogon.com has good advice to check out so between this and that site there is a wealth of knowledge to explore.