Mass Loading will fix that boomy bass, you can start out with 5 pounds of weight on each speakers and wait a few days and see how you like it. If that does not fix it just add more weights. I use mass loading on everything in my system....all audio/video cables too, this really can improve your whole audio/video system!
Advise on acoustic treatments to fix boomy bass.
Have speakers that I really like. Problem is they need to be out from back wall about 36". Closer and the bass gets boomy. They are a ported bass reflex design. Anyone have any experience with acoustic treatments that will remedy this situation and allow a placement closer to rear wall? If so, please provide specifics.