Acoustic panels


I made four acoustic panels (29" x 16" each) out of some extra dynamat, and 1/2" MDF. My problem is that I really have no idea where to stick 'em, especially in regards to height. The room is is 11x12x8, and the highs are brighter than bright; three songs and i'm down for the count. I would appreciate any advice, theory, whatever. The speakers are hales rev twos.
ohlala
Dynamat is an acoustic treatment that is used primarily in car audio. It is a flexible sheet that can to be cut to fit door panels, hoods, etc..
Dynamat is available (in several variations) from Parts Express http://www.parts-express.com/
You will have to cover the entire room. But i am not sure, how effective it will be??!! Because you cannot expect a good result from homemade panels. Better you should try ready made panels. Now-a-days different types of very good looking panels are available in the market. You can visit  http://www.acousticmanufacturer.com/Noise-Barrier-on-Temporary-Fence-for-Construction-Site.html  to have an idea of different type of panels. Thanks.