I bought a home theater in a box last year and I'm not pleased at all. This year I am going to upgrade. I have searched around and found some great prices thanks to you all. I have a RCA receiver-500 watts with 5 channels. I am starting out with 2 main speakers and a subwoofer. Here's what I am looking at buying: --Pair of JBL s38 series one or two --JBL pb12 I listen to mainly music and people have told me these sound really good. My question is do I really need a center channel for a music setup? Would it make that much of a difference? Tahnk you all very much for your help.