Hey John!!
Thanks for providing such a great source of knowledge. Reading inside this forum I've learned a lot. thanks again. :)
The length of my control room is 3,46 m, so I'll put absorption on my rear wall, NO diffusion.
I want to know if there are some increment of performance using the rear wall design that you used in Silva Productions Studio, that has the middle of the wall in pyramid or is the same performance that the design in your wall units page?
External image, not preserved — original: http://www.johnlsayers.com/Studio/Images/SProductions/Up4/9.jpg
External image, not preserved — original: http://www.johnlsayers.com/HR/images/Unit_2_imp.jpg
Thanks...
Camilo.