Originally Posted by RKrizman
Have they been discussed to death here already? In the other forum some detail came up about squeezing 1/4' masonite or plywood between two studs to make it bow out about 6". Useful for diffusion and bass trapping. It seems really easy to do. I know SAC will say that it all needs to be specific to your needs, but I'm curious if anybody has opinions or construction techniques to share about these.
Airtight or open? Stuffed or hollow? I saw Ethan's video unfavorably comparing polys with his well diffusor, but those were a series of polys, which apparently presents problems.
Sorry if this is a tired subject, but if these are effective it could provide easy solutions to a lot of problems.
Put a wall of them on my live room. It helps to smooth it out quite well. Open on top and bottom with insulation inside. 4 feet wide 8 feet tall. Plywood back with 1x2 pieces on the edges. Oak plywood for the fronts.
In my previous studio build and also on this one I tried panels made from Luan boards. The issue I had is that the stock of Luan that Home Depot sells are always different. When I was putting this together I built two at home and the Luan panels bent in just fine. Nice and easy. When I went to build these I bought 4 more sheets and found out it was a different supplier and the panels would not bend enough. I ended up breaking a panel after trying to get it to bend and suck in. I looked again and found them to be entirely different stock. Went back and found the oak plywood that was actually thicker but bent like butter. All 4 panels went together fast and easy. Then the only problem I had was they were actually to flimsy and wouldn't stay in place. I put finish nails all along the sides from top to bottom to secure them in place and keep them from rattling. Worked out well. A little stain and they look fantastic.
I have always loved the look of Poly's and they do work. Maybe not the same way as other diffusors but for the cost versus size they do the job well.
Not an expert but it works so for me its a no brainer.
The room is 23X 19 with 13 foot ceilings. Give them a try. Fairly cheap to build.