Room treatment advice w/photos

[thezebralad]

Ok, so I guess I'm asking a few things here but I keep reading up on the subject of room treatment but I need some definitive answers as some bits apply and some other bits don't!

Right my 'live' room is 22ft long, 12ft wide and approx 8.5ft high. However, I am only able to use around 2/3 of the room as I can't really move the plants anywhere and there is the large bookcase and fish tank to consider. You can see some pictures of my normal room, some once I have moved the furniture round to the approximate set-up. I might be able to shift the 1-seater chair out of the room altogether and push the 3-seat sofa back a little more.













I have currently built two acoustic panels, using Rockwool R3 (50mm thick) and some thin felt (checked for breathability) with a thin timber frame. I have the materials to build eight of these, but after looking around on here it looks like I might be better off with at least one bass trap, so I could do six panels and one bass trap or four panels and two bass traps.

So my questions are:

1) Can I make a suitable bass trap by doubling the thickness of the panel but keeping the same dimensions for the frame?
2) Where should I place my finished panels (if I did one or two bass traps and between four and eight panels)
3) Should I apply any treatment to the far patio doors or the window to the side of the doors?
4) What other treatments should I look to be applying?

Many thanks!

[Glenn Kuras]

One bass trap is not going to be enough. As far as placement it is best to spread them out as much as possible but keep in mind that any mic close to a wall is going to need absorption on it. Also you are going to want panels above the area you are recording.