I saw this many, many years ago and it looks inexpensive (comparatively) and not too difficult to put up.
http://www.mother-of-tone.com/acoustic_panel.htm
There's no need to order it from Germany as you can get spruce wood panels just about anywhere.
All the best,
Nonoise
http://www.mother-of-tone.com/acoustic_panel.htm
There's no need to order it from Germany as you can get spruce wood panels just about anywhere.
All the best,
Nonoise