Hi Rob: Jim, from Summa, here. At Bob's behest, I'm jumping in with some info on the 50" Summa DC2 ... with this caveat: I'm not entirely sure if everything I say applies in the UK. Check with our <a href="mailto:info@summadirect.co.uk">UK folks</a> for more info. DC2 uses a 4-inch (sorry for the En...