OK, I've just my received this very very good TV. At the moment I have it rigged up through a receiver and the Mission Cinema7 speaker package. The centre speaker is huge and has to sit in front of the TV hiding the TV stand a looking pretty naff really. I wanted to try the "Centre Speaker In" connection on the TV but I notice it's a RCA type. Does anybody know if this connection requires a pre-out on my receiver? I can;t find any info on it in the manual. Of course my receiver (Denon AVR-1604) only has powered output to the centre channel. Also do you know if speaker cable to RCA adapters are available? Cheers.