Instructables is one of the best blogs for learning ways to make things yourself for 'grate' fun, AND never hurts to save $$$ in the process. Another site I wish I had when I was in 8th grade. We all dreamed of making our bedroom or basement a recording studio, remember? Now you can.From Instructables:
"Acoustic treatments are often used to help improve the acoustics of a room by taming "flutter echoes," "room modes," and other problems which arise from a room's dimensions and construction.
Although a variety of treatments are available for commercial use, they tend to be quite expensive. After some research both online and in print, we came across several sources for DIY acoustic treatments using rigid fiberglass panels and simple frames. These are often referred to as "bass traps," although the ones that we're focusing on have a fairly wide range of absorption. While commercial versions are available for almost $100, we were able to make these panels for about $24 each."
Read the simple way to do it in step by step pictures and instructions at Instructables:
Grateful Web Renaissance People: 



