I'm trying to decide which framing method to go with for a particular room while finishing a basement. I live in New England and I already have 2" foam board glued to the concrete using the correct foam adhesive. The concrete walls themselves are below grade. The room is roughly 11'x 19' with 2 of the 4 walls being the concrete/foam board side.
I'm planning on using this room as a home theater room with a large TV (>= 65") mounted on the side that has the 2 concrete wall/foam board. Furthermore, this wall will use sound proofing clips to mount the drywall to the frame.
Since I feel that space is at a small premium, I'm tempted to go with a 1x3 grid framing spaced at 16" on center vertically for the second layer. Would this support the weight of a TV? Would it be a good idea to use particular types of wood and not others? Are there are any other concerns I should take into account if I was to go with the 1x3 route as opposed to the traditional 2x4 route?