Interesting video. One thing the gentleman forgot to mention is that you should be using "in-wall" CL2 or CL2 rated cables for your low voltage wires such as HDMI and speaker cables in wall cavities. I believe this is code is some locations so check with your local building or electrical code departments.
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Don't go around saying the world owes you a living. The world owes you nothing. It was here first. - Mark Twain
