Hi. I am struggling to finish my home theatre system. I have my new Yamaha RX v383 receiver. My Yamaha 5.1 speakers. But I have a pair of Wharfedale Diamond 9.1 speakers I'd like to use at the front. I know they are old but they sound great to me. I tried to find a Wharfedale 9 centre speaker, as I've learnt how important it is to match the front 3 speakers. The only new one I can find is going for almost £100. It's old. And it seems too much. Could someone explain how I go about matching a new centre speaker. By budget is about £150 and it needs to match the Diamonds 9.1. What do I need to match?and what is speaker timbre to timber? Id really appreciate any help.