HI, Im setting up a home theater in my basement and wanting to use some of my exsisting equiptment. I have 2 Cerwin Vegas (Re30's) and a Cerwin Vega Center Chanel.I currently have a sony STR-D965 (dolby pro-logic).I want to switch to a digital surround 6.1 or 7.1. Do I need to worry about matching my surround speakers to my front and center channel?