I'm very new to home cinema and have to admit i dont know a great deal about it. Given my lack of experience i've used a local dealer to install a system for me. Most of the work has been done to a reasonable standard though i do have issues with some of it. The main thing is the sub cable they are using, i've paid £50 for 3 metres of it and to me it seems very insubstantial for the money, maybe 3mm thick. It appears to be unbranded apart from the number 3002 down the side. When i asked how much it was a metre the guy became quite aggressive and wouldnt tell me. Given that i'm planning to buy an AV 3803 and a £500 sub would this cable raise any concerns for you?