> Use a dozen cheap foam panels to reduce unwanted room sound (placed closer to the vocals/instrument depending on situation). I tacked mine to a sheet of plywo

> Use a dozen cheap foam panels to reduce unwanted room sound (placed closer to the vocals/instrument depending on situation). I tacked mine to a sheet of plywood so that it could be moved around. This is a good suggestion. Acoustic panels can be made really cheaply and simply. Here's a couple of examples. Old towels in a timber frame: https://www.youtube.com/watch?v=pABvTWSxOes https://www.youtube.com/watch?v=pABvTWSxOes Aluminum / Aluminium frames with foam or insulation: https://www.youtube.com/watch?v=qczNxoG8s6o https://www.youtube.com/watch?v=qczNxoG8s6o I like the first video because he does a bit of minimal testing with a tone generator. I'd be interested to see more testing, using more realistic frequencies, in a room.