Originally Posted by Ted White
Wow, that's efficient use of space. And per Big's earlier comment, that sort of space under the stairs is clean and easy to decouple and drywall. Not as straightforward (to me, anyway) when going through the side walls of the stairwell.
And I also got a small storage space under the stair case, so no space is wasted. I didn't do clips and hat channels under the stair case, the space is too tight, but I do have double 5/8" drywall and green glue in between, since that space is off the main side wall, sound waves will not direct hit that space especially, the side wall will be treated so I think I can get away without using decoupled wall there.