first thing i would imagine it would do is overheat..it has a fan in it that circulates air to stop the internal components from heating up too much.
the air would not circulate properly
just a thought..
edit: you can get wall mount brackets that have duel layer trays.
http://www.prlog.org/11652291-tv-mount-with-shelf.jpg
just another thought..
and another thought
if you already have your tv attached to the wall..plasma/lcd ect then you could get :
http://dvdwallmount.net/wp-content/t...tor/Header.jpg
just put the v+ box on it...