I'm looking for some suggestions for a minimalist approach that I can take to get some improvement.
First thing to note is that this is for 2-channel listening, not surround. The details of my system are posted elsewhere, but the important thing is that I'm using SDA-2B's.
My room is quite small - it's only 12' x 12', so I know that all the money in the world worth of acoustic treatments, and it's still not going to sound like Carnegie Hall. So I'm not looking to spend huge bucks, just something to tone things down, control the bass, and help isolate the speakers.
A few things to note about the room:
1) The ceiling is only about 7' high. It's a drop ceiling with some textured Armstrong ceiling tiles, which I imagine should actually be pretty good for acoustics.
2) The floor is concrete (it's in the basement), with padding/carpet over it.
3) There are no windows in the room, just four walls and the door.
4) The "front" of the room (as in the wall with the stereo) has an 8" high, 2 foot deep soffit running across it, so the stereo is under the soffit. This might create a need for extra dampening, as the front of the room will have two sets of upper corners - where the front facia of the soffit meets the ceiling and the side wall, and where the front wall meets the bottom of the soffit and the side wall.
5) The back wall has baseboard heat running along the length of it. So any bass traps that are intended to be placed in a corner will not work because the baseboard heat will be in the way. The only way to put something triangular in the corner would be to raise it about 8" off the floor, so it would be higher than the baseboard.
I'm really hoping to find some bargain acoustic treatments, because as I noted the room is so small that there's only so good it will be able to sound...