I have a pair of Polk R50 floor standing speakers that I purchased years ago and am still quite happy with. To complete the 5.1 system, I have been using some old Infinity speakers from a 5.1 home-theater-in-a-box system that my wife had for the center and surround speakers. Not surprisingly, the overall sound isn't that great. I'd like to improve the surround sound by finding tonally matched speakers for my R50s. Would I be able to find matching center channel and rear surround speakers for R50s these days? What would the original matches have been from the same series back when they were all still manufactured? What would be the closest match that I could find sold new today?
Although I prefer not to, I could start over from scratch and by new front left and right speakers if there is no way to find a suitable match today. Is that my best option? Any help would be appreciated.