Im in the process of having a media room done, I have power at the TV level and some sort of orange conduit at tv level run to AV equipment level. These are all 'on the wall', they are not recessed at all. Is it necessary to use recessed 'boxes' like I see in some installs? Also, if I don't use a power bridge, how do I go about surge protecting the TV if its plugged in behind it? Just want to get some insight since the installers have done this so far and I am still at 'stud' stage...no drywall yet.