I have recently purchased a one-box home cinema system (JVC THA30R) with which I am overall very pleased. It is set up in a fairly large multi-purpose room with an AE100 Panasonic projector. The weakest link in the system - surprise, surprise - is the speakers. I can't even replace the string-like cable with reasonable stuff because it's hard-wired into the back of the speakers. I have seen a 2nd-hand JBL center-speaker on sale for about £70 and am wondering whether it's worth replacing the little plastic effort they supplied with something beefier. I want to keep the costs down, so going out and replacing the whole speaker-set is not really an option - unless someone can point me towards some decent speakers for around the £150 mark? Any advice/opinions? Lampsh.