The sardonyx doesn't match the SSR, it has SEAS drivers instead of scanspeak. You have a couple of custom options... I'm going from memory here so email rick to be sure... one center with 2 7" daytons, a 5.25" scanspeak and fountek tweeter or one with 2 7" scanspeaks 1 5.25" scanspeak and fountek tweeter. Or you could get a MF7 I have 3 of them for LCRs