Randy the way we built our shelves was very easy, all the material was bought from Home Depot. I wanted a unit that would haul the mail because at the time I measured the top shelf for a 75 lb Rotel 5 ch amp that I was considering and I wanted the shelf strong enough to hold the weight in the extended position with strength to spare.
Also regarding the wall plates, I referred to several sources (including Alan) about signal loss and was assured that as long as there were good connections no signal loss would occur using the wall plate/plug setup ... after having my system going for over a year now I'll most certainly agree.
