Good but Cheap Treatments for Flutter Echo

rigid fiberglass covered with material. Looks good and is much more absorbent than foam.

I assume you're walking around the room, clapping you hands and hearing it? Try a tapestry, or a quilt in the location. I use the ASC wallboards..about $50 each...but the look good.

Maybe also a shelf (or several wall sconces) with some odd shaped objects...anything to break up the refections...mine was high up...like 6-8ft where the furnature wasn't killing the bad vibes....

Go to klone-audio / click on Audio Worx Website / click on DIY Sound Absorbing Panels / click at bottom of page on Chris Tsutsui's DIY panels. Then say WOW! Thanks, Romakabi.

Check garage sales and antique shops for a folding room divider or screen. They come in many sizes. Some 3,4 and more folding sections. This can be covered in any favorite material and placed in a strategic area to work great and actually look nice.

Owens corning 703 ridgid board covered with a roma wool.I did 16 24"x48" for about 300.00.Two inches thick.Come to find out four inches would go down to 500hz.