If aesthetics are not a priority and you can live with the look of unfinished foam this is an inexpensive possibility:
http://www.nextacoustics.com/
http://www.nextacoustics.com/
What are the best Room Accustic Treaments members have found?
I am looking into adding some room acoustic treatments to my room. I am just looking for advice on some simple room treatments that fellow members found worthy of purchase.