I've been meaning to cobble together a quick and easy diffuser to place behind the sofa. Not the ideal treatment for the spot but, as one expert noted, it is better than having nothing.
The idea was to use halves of tubes of some sort. I considered round fence posts, bamboo halves, sch.40 pipes, etc. Over Christmas, while on my daily trip to the hardware store I came across these birch firewood bundles that looked regularly shaped and varied in diameter. Perfect!
Well, I tried sawing them in half but they defeated all my tools, so I gave up.
Forward a few months and I took another stab at them. This time I persisted. I got through the pile using a table saw, lots of care and patience, and regular trips to the electrical panel to reset the breaker. The piece of OSB is screwed to the firewood.
The panel is 3ft by 5ft 3/8ths MDF on a poplar frame. The finished panel was quite heavy, about 50lbs so I had to employ a super french cleat, similar to my screen. This awesome stud finder was able to pinpoint studs through two layers of drywall and green glue.
*Edit: The birch halves are secured by screws driven from the back, in addition to the wood glue.
The diffuser is just another reason to delay getting down and dirty with REW, in order to carry out some real analysis of the room. Guess I am now out of excuses.