Ok, I've been collecting speakers for a HT system for my parents new house. I just picked up the Dayton 10" sub. The thing is, I just drove the four hours to do the final walk through on the house and discovered the previous owners are leaving a pre-wired 5.1 system (front and rear in the ceiling and center and small sub built into the wall). So, do I keep the Dayton and add it to my system paired with my Boston Acoustic PV600? Would I see any difference? Or do I return it?