Broadband panels, or cover walls entirely in rockwool?
I'm currently spec'ing out a new audio room - it's 4.4m x 3m, and will be used mostly for mixing and listening, as well as a limited amount of recording.
As the room is being built from scratch within a larger office space, I have the option of incorporating some acoustic treatment into the build. My current plan is to space broadband absorber panels around the vertical walls at the reflection points, with superchunk corner traps and a soft rockwool ceiling. Looking at the design however, it wouldn't be too much more effort just to completely cover the walls in rockwool panels.
I'm guessing that this would lead to a very dead room, but we could potentially add covers (say strips of card or plywood) to liven up the HF slightly if the room proves to be too dead.
Is this a good idea, or should we stick to a partial covering of spaced rectangular panels?