Faux beams in theatre

First, I'd drop Ted a line at the soundproofing company. He'll likely recommend forgoing the quietrock for double drywall and green glue for improved sound isolation. However, a potential alternative would be a first layer of OSB. This would let you attach your beams wherever you like, without concern for "shorting" your sound isolation.

For sound isolation we want to add as much mass as possible, so adding two layers of material does this nicely. Adding the Green Glue between the layers acts as a damping agent to help dissipate the energy that couples into your ceiling. I'd have to look back through the articles posted on the soundproofing company's website, but I'm fairly confident that in the bandwidths we're concerned about in a HT, DD+GG outperforms quiet rock.

Again, I'd highly recommend you pm Ted White before buying the quiet rock. This topic comes up regularly and I'm not sure I've seen a theater yet that opted for quiet rock over DD+GG. He can also point you the right direction concerning the test data.

Edit: as far as exceeding the weight limits of the clips, you would need to make sure your clips are spaced appropriately for the added mass, but this is a pretty common approach here.

If you know the locations of the beams, you can install extra clips and channel specifically to provide support for the beams. I can't find it now but a graphic has been posted several times on this forum illustrating this technique to support a soffit.

Here is a thread from one of the resident masters where they used OSB and drywall. This one is a bit different since it's room within a room instead of clips and channels for isolation. Still lots of great info there.

Welcome to the forum. You're at the right place.

Quietrock is really just two thin pieces of drywall with a dampening compound like green glue between them. It's more effective (and cheaper) to make your own out of two layers of 5/8" drywall with green glue. Check out the green glue website for some data. They compare the effectiveness of different solutions as well as the cost associated with each. You'll see that using green glue is lighter on your wallet than quietrock.

And it is always a good idea to contact Ted. He'll get you hooked up.

You're calling them "faux" beams. Do you know what they are made of? They are probably NOT actually big, heavy, beefy beams. Most beams are usually 3-sided boxes and now they even make them out of styrofoam-like products that only weigh a couple of pounds.

I'd find out what the beams are made of before I go crazy worrying about the weight limits of clips and channel.