lolzgreg
Cereal Shipping Sneapster
those room calculations are bassed on enclosed spaces
have a look at the pictures, you'll see there are 3 very large openings to the room
Yes, but they still play a role in this.
I would have the drums facing AWAY from the fireplace, because you would have the most "diffusion" from the fireplace being made of different materials and being of varying shapes. Also, best the direct sound of the drums pour out into the different rooms.
I've gotten the best results by hanging a moving blanket or two above the drums-no direct reflections into the overheads this way.
The dullness will be a problem unfortunately, I tried recording drums on carpet once. It wasn't too much fun.