I personally like the idea of a neutral space but am not convinced that a dead space is the same thing, having been in both
I agree X, though the room seems to small for a natural space, dead seems better I would think.
All the drawings in the world will not prepare your head for what your room is going to sound like when construction is complete and in the final analysis, tests and your ears will be the deciding factor.
Again I agree X though details are scarce.
So it is putting the horse before the cart to anticipate what kinds of treatments will be needed, if this was even asked
X I was worried about Sprig putting in another tiled wall, this would be possibly useful as a timed chamber though again the space is small and getting those calculations, well sprig seems to be going as fast as he can.
You mentioned up topic about doing an inside out wall or a simple massed up wall in the rear, either of which would be good for your place.
X, again I thought the inside out Tiled wall (Literally or not) could be an irreversible mistake, So Mass yes, as often people are not 100% clear and if Sprig can achieve that and a dead space with serious trapping I thought this the best option! No? I just didn't think he would get a Natural Space Sound with the size! So dead was the way to go!
Given the space restraints you have the massing up seems like the better option (it is difficult to get a good read on a room/wall sometimes).
I agree X 100%..... Ok so I could not resist the tiled Lexicon room joke, so Mass & Trapping as the Trapping can add to taste or am I wrong here? There is scarce info X so I thought these obvious, maybe the Tiled room joke was a tad much.
Hopefully this is something helpful to you,
And possibly myself X
Cheers
ADDA