^^^ Folks, please ignore this troll. If you want to learn about room treatment, do as I suggested and ask in the Bass Traps section here on Gearslutz. The exerts there are glad to help everyone with their budget / DIY projects. If you want to read and learn how to DIY cheaply on your own, most of what you need is right here in one place:
Acoustics FAQ
There's a ton more
non-commercial advice that applies equally to DIY people on my company's web site:
RealTraps Articles RealTraps Videos
--Ethan