Hello folks- I am looking for some expert advise to make sure i hook up my parents outdoor speakers up correctly. the media’s path: bluetooth-> tx NR 636-> output ”zone two RCA”-> audio source 102vs-> russound ss 4.2-> 3 outdoor speakers. im concerned about impedance with the amp and also turning the stereo signals to mono. i am buying my parents 3 new outdoor speakers to replace some old blown ones. I just want to make sure all is well with impedance/mono wise with the media’s path. Looking at 3 new https://www.monoprice.com/product?p_id=15699. 3 in ceiling speakers is the only option fyi. Thanks for the help