HELP! where should things go/ how many absorbers

Due to other construction limitations (ie rest of the house and keeping spouse happy), this is the shape and size I have for the studio. Drawing is to scale. Ceiling is 8 feet. I clearly need to treat the room or I will horrendous boxiness ... I am going to follow the designs John has on the DIY panel link on the homepage here. Due to the way the door is built, I can't put a corner bass absorber in the corner where walls 2 and 3 meet. I also can't put my desk on wall 4 because that is where the door is to the other room/iso area (which I will treat later and in a separate thread). I need to fit a 3' deep by 5' wide desk in the room, an upright grand piano, and a drum kit. Amps and mics will all live in the iso room. PLEASE PLEASE help me arrange things and figure out how many panels I will need and where they need to go. By the way, the pink lines indicate walls that have been built using staggered studs, double wall, filled with insulation. Heavy black lines are to the outside of the house. Concrete exterior, with 2*4 studs, fibreglass insulation, and double sheets of drywall. The wall between the mix room and the iso room is currently 2 sheets of drywall facing the control room side, on 2*4 studs which are open on the iso side (to be dealt with later).

You are going to have to move the door into the iso booth like this. cheers john

I hadn't thought of that. So, are the monitors soffit mounted into bass traps in the corners? can you please explain what each of the shaded brown areas you have indicated would be? ie. which are bass traps/mid range/resonators etc.

It's just a standard soffit mount speaker system with slots on the sides to break up the parallels in the listening area and a heavy insulated rear wall to stop rear reflections. Go to the construction site and check out the studios that have built them. http://johnlsayers.com/Studio/index.htm cheers john

what would happen if a piano lived at the rear wall : keys facing the wall, and about 2-3 feet of space (upright piano)? Is there any way you can see a piano living in this room?

Yeah - you culd put it against the right wall at the rear. cheers john