So I am going to mount a 65" tv weighing approximately 55.347lbs using an omni mount (probably this one: http://www.omnimount.com/products/tv_wall_mounts/full_motion/ulpc-x/). It supports a max 250lbs. The arm extends and tilts/pans/swivels and I plan on using that functionality all of the time.
My home is older and is framed with 2x3s. Assuming I follow the manufacturer's installation guide correctly, and I find the center of the studs correctly, can I go straight to the studs or should I think about 3/4" ply (VC) between the wall and mount?
I guess I'm just worried about 2x3 vs 2x4 and having the arm extended completely.
Any advice is appreciated.
Edit: I just saw that the power bridge product require a 2x4 depth. So that is out.