Tom and Thomas,
Those are great thoughts. I was surprised as well when our studio designer suggested the adjustable acoustics in the control room. After learning that it would be an inherit design in the diffusion cabinets, I didn't see a reason not to do it. Now that we've been in the space for nearly a year; I really like the flexibility it offers. Keeping the cabinets closed gives the room a more 'live' sound. This is the usual position. It is a very comfortable working environment. It works well for most sessions because the RFZ still allows for the initial reflection to be heard after the direct sound. The more "live" control room gives the impression the room is bigger than it is and maybe good for mixing material that will be played in larger environments. Opening the doors, lowers the reverb time in the room thus giving the control room a more traditional sound. I find this useful for music sessions and detailed mixing. For speed and creativity, I record foley in the control room. The adjustable acoustics has proved valuable here as well. Thanks for your thoughts!
Jon Brennan