Klipsch Synergy S3 Surround (back) speakers. (Wired) selling a pair (2) speakers for Sale in Brooklyn, NY - OfferUp
Klipsch S3 Reviews - alaTest.com
Ultimate College Dorm Setup (Klipsch Synergy F3, Klipsch center+surround, klipsch ksw12 sub, and onkyo nr696 receiver for about 500 out of pocket) : r/BudgetAudiophile