Next to the foam! First, I was a little worried about wood with just a t-shirt over it. That's a reflection waiting to happen!



I found some foam strip that I used a long time ago for.. uhh.. oh, who remembers what. I slit it down the middle to the right width and stapled it to the sides of the frame. This will also pad the frame edge. Stretch it tight so you don't get wrinkles.



Now, once that's on we can pick foam. I have two types of foam here. Remember, we are trying to make the surface as un-uniform as possible. Ever seen real studio foam? It looks like the dark grey egg crate foam below. That's so the sound reflects in several different directions, scattering the energy into managable, small amounts. So what we don't want to make this whole thing completely even behind the shirt. The frame corners and wood braces will help a bit, but we need to do that with the foam too.



So I fitted together a few different types of foam in different arrangements until I found something that was a bit haphazard looking (doesn't matter!) and then totally forgot to take a picture of it.



Aaand behind these pictures is the reason I need this thing (drum kit). Also some sound dampening blankets I got from Audimute.

