Great thread!
Okay, I must just be lazy....
I went down the local University's "Re-use & Recycle" shop and picked up a few 6-foot tall partitions. These things are made to be sound-deadening for office spaces and cubicles, and are completely mobile with removable bases and everything.
Only $10.00 a pop, regardless of size!
So, I got 2 larger ones (6' tall x 5' wide) as sides, and one smaller one (6' x 3') to go in the corner of the room. With this set up, I still have to use one uncovered room wall, so I think I will either cover it with some carpet padding that I have, or get another panel to set right up against the wall. I'll have to play around with the sound a bit to figure out what will work best.
Actually, it sounds really good having the smaller panel set up in the corner (so that if you were looking down from the ceiling at it towards the floor, it would look like an equilateral triangle), and then one larger partition branches off from that at a bit of an angle, with the last partition running parallel with the studio wall. It kind of looks like a letter "J" from the top, if you know what I mean.
Anyways, in this configuration, I can still get a pretty "roomy" sound, but if I take that last partition and move it's free end to the wall, (making the configuration more of a "U" now, and creating a completely closed off area), I get a nice dampened sound without any echoes or artifacts. I will have to experiment with either placing the padding on the one remaining uncovered wall, or just get another panel to rest on it.
I know it’s not perfect, but it is much better than I had ...and it was dirt cheap!
Anyways..., that’s all I know.
-Mr. Moon