As I attempted to explain, I've tried swapping leads to known good speakers/amplifier inputs. It still isolates the problem as the RR channel. Is this even possible?

Home: BDP-103,G61R, HD621, Quad520f, 2xInnersound amps, 3xQuad ESL-63s, 2xJL Fathom F112 V1 subs, 2x Gradient SW63 subs.
iFi Zen Stream , Audeze LCDi4.