Hi Tda:
Allow me to offer a few considerations.
1. Why not contact Sonus Faber to ask if they have room recommendations?
2. Rives and other consultants can provide you basic help without visiting your home so being in Europe should not matter.
3. There is extensive room design/treatment information on line if you do a search. The more you learn, the better consumer you will become. A 30 x 20 x 10 (assumed average height with your ^ ceiling) would likely have problems with standing waves because of multiple dimensions. I'd suggest planning on classic dimension ratios (L x W x H) such as 2.52:1.59:1 or if you really need a large room then 3.18:2.52:1.
4. The best rooms I've heard offer a balance between damping and reflection. You will need to evaluate both.
Good luck.
Allow me to offer a few considerations.
1. Why not contact Sonus Faber to ask if they have room recommendations?
2. Rives and other consultants can provide you basic help without visiting your home so being in Europe should not matter.
3. There is extensive room design/treatment information on line if you do a search. The more you learn, the better consumer you will become. A 30 x 20 x 10 (assumed average height with your ^ ceiling) would likely have problems with standing waves because of multiple dimensions. I'd suggest planning on classic dimension ratios (L x W x H) such as 2.52:1.59:1 or if you really need a large room then 3.18:2.52:1.
4. The best rooms I've heard offer a balance between damping and reflection. You will need to evaluate both.
Good luck.