DIY Acoustic materials arrived today... couple questions
In expectation of the OC703 coming in today, I purchased some wood to frame the panels. I had planned to build a frame around the edges of each panel, as in rip the pine down to the same thickness as the OC703 and box it in. After reading another DIY panel build, I'm rethinking this project. Am I supposed to build a picture frame and place the OC703 on top of it? This second way of building the frame would allow the edges of the OC703 to be open, only covered by the fabric. Does it make a difference?
My second question has to do with a little test I thought of to see what might change after I put the panels in the room. This test may be going in the absolute wrong direction but here's what I did... I could here an echo in the room after an ordinary clap of my hands. I was under the impression that this echo would no longer occur after the panels were introduced into the room. As soon as the material arrived, I opened the boxes and placed the raw OC703 where I planned to install it. I then tried the clapping routine and the echo was still there. I have six 2' x 4' x 2" and three 2' x 4' x 4" pieces and the room is 14' W x 20' L x 7.5' H. I know I need more panels but I thought these would make some impact, am I going about my test incorrectly?