Originally Posted by myaudiocd
Zulu, nice job on the build. It's very similar to what I'm undertaking a few hundred km north of you.
My space is similarly sized, and I've got some of the same design targets, ie the soffits, separated equipment, a riser, future-proofed wiring.
I'm wondering how you're finding the noise isolation, with the pot lights and the soffits, the RC for the ceiling drywall, the Roxul and the Quiet Zone?
And your riser dimensions. Did it turn out to be right-sized?
Have you started a build thread yet? I wish I had began mine sooner...
Thank you for the compliments. It might be exciting to see some of your plans, and from the sound of it, you are looking down the right set of choices in a number of areas. What is the size of your home? If you have two levels separating you from the theatre then this type of isolation will be fine. I have a bi-level home with no third level, and we find that with a TV on upstairs, or people talking, that it drowns all but the deepest LFE...which I doubt anyone who builds their own room could truly eliminate (It would take a big budget).
Roxul and Quiet Zone are so closely matched in terms of sound isolation, I would let only two things determine your choice between them: 1) location, do you need Roxul because it will not allow promote mold, or catch fire, 2) cost, and the size of your budget as Owen's is much more value for the dollar. I am using Roxul in places that might one day have water (riser on the concrete floor, and below any water lines in the soffits). I used Owen's Corning just about everywhere else.
I will write some tests and results of sound quality soon, as I use an SPL meter I have on loan from a friend. I will include rooms around the theatre and above.
I have found that the riser is the correct size, but that since most of the movies we watch are 2.40:1 I actually end up never even coming close to an issue. Though with the front row in recline, even a very tall person (6'3) does not become an issue, maybe only if they did not recline the chair...who would sit like that through a movie???
The RC makes a difference, as compared to when I use to listen to movies down there before all the renovations. So, yes, RC is worth the time and money.
I will try to write more soon, and post some results from sound tests.