If I use "staggered stud" construction (2"x4" on a 6" base plate) on the exterior walls, and 2"x4" studs with reselient channel on the interior, what kind of STC rating can I expect?
If I have "staggered stud" construction on exterior walls, is that enough separation, or do I still need a wall inside of that?
Hi michael, Hey, I'm no expert at this, so just a comment/question on this. IF the exterial wall is staggered, then that means you are planning on sheithing the interior face of that wall, correct. Or why would there be staggered studs, right. I would say, that in order to determine if you need another perimeter around the studio itself, then it seems that you have to determine first- the level of sound you are trying to keep from transferring from outside in, and vice versa. 80db outside? 115 db inside? See what I mean. Which is greater? And how much tolerance for peaks will you allow? Now, I know that the best way to build a control room/studio Isolation is 2 rooms within a shell.Or more. But in this case, maybe only the control room has to be the only room within a room. The studio is the shell, if the isolation you need, is enough by the external walls. that means only the control room would have its own walls. I would stagger them. However, this all is determined by the isolation requirments of the soundfields that exist, and that are going to be generated within. And your budget, time etc. etc. etc. These are just my own thoughts and I am speaking from exactly NO EXPERIENCE. So like I said, I'm no expert, and maybe I'm just "spittin in the wind"! And BTW, let me quote something I read in Everest's book yesterday that has me baffeled, as it contradicts many assumptions I have read here, regarding this very subject and modes. Bear with me.
quote- "The Outer Shell of the Control Room-
The size, shape, and proportions of the MASSIVE outer shell of the control room, determines the number of modal frequencies and their specific distribution as discussed
in chapter 6. There are 2 schools of thought-one preferres splaying of walls to"break up" modal patterns, and the other preferres the rectangular shape. Only a modest deviation from a rectangular shape towards a trapezoidal shape is feasable. Such a shape does not get rid of modal patterns, it just distors them into an unpredictable form. Others feel that symmetry for both low frequency and high frequency sound better fits th demands of stereo.
To contain the low-frequency sound energy associated with control room activities, thick walls, possibly 12" thick concrete, are required." unquote
Well that is a mouthfull! And really brings up some questions in my mind. I will post those directly to the forum.
fitz