All I'm saying is that, if we are going to build a CR's front wall from scratch using double frames, instead of building it and then constructing the soffit "add-on" (which will occupy space anyway), we could intergrate John's or Barefoot's soffit mounting design to the inner wall, wasting no more space than the space for the add-on requiered.Ro wrote:A wider air-cavity is, acoustically, very good as a matter of fact!
BUT, are you willing to "waste" that precious space. That's mostly the most important question. If you can; DO IT! If not, don't build the soffit inside your inner layer.
The big question is that, eventually, are we going to benefit from going this risky way (I say risky because the add-on is the obvious safe way to do it, if it doesn't work, well, you remove it, change it and put it back, try to do that with the inner wall...
)? Is it gonna be as effective or more as the add-on? Is it going to be less time-consuming to build? Is it going to be less expensive to build? We will never know, unless someone is willing to take that risk... 
