A little update. More diy from me, and more diy to come after! Also to note, I replaced the T-amp for a sony receiver, and the blue linksys for a newer, slimmer black linksys. That damn T-amp died on me for the second time.DIY Acoustic bass traps!!!
First, the material. My dad gathered lots of free acoustic drop ceiling tile (4'x2') that we use for the panels. Each panel is 4'' deep, which means we need roughly 7 of the fiberglass panels stripped from the ceiling tiles.
Next, the custom frame, tapered down to 2 inches at the edges to give the panels a slimmer profile on the wall. Although the picture doesn't show it, the front of the frame has quarter-round at the edges so there's no visible edge-lines on the face of the material when stretched-- painters should know this trick well. There are 4 small pieces of wood spanning the canvas to keep the fiberglass in place.
3 layers of rigid fiberglass is put on until the 2 inch mark where the frame begins to taper, and then the stretching of the fabric begins. For those of you who've never stretched a painting canvas (boy have I-- mfa) you start from the center of each side and then gradually work out, making sure to do all four sides at once in this manner.
What's a good stretching job without good corners? The oddly shaped frames presented a more complex corner, but careful planning, cutting and stapling triumphs.
Now, we insert the last layers of the fiberglass, and cut each one to taper with the frame.
Lastly, a backing material to cover the backside of the bass traps-- no hard back for better performance!
Wall mounting is simple, four brackets like this-- two for top and bottom. One end screws onto the wall and the other screws up into the panel.
I've already made a seafoam green one earlier to go with my couch. The red one will go with my TV panel and red chair.
Next thing to do: Primitive Root Diffusers! This is a simplified schematic based on a BBC report done in 1990. Normally they're 2'x2', but I'm making them 1'x'1. There will be two groups of 4, centered in between the two bass traps on the back wall. Each group will be made of white pine, douglas fir, redwood and black walnut. 2 down, 6 more to go! An in-depth diy for these will be later.