Please help folks, I've been a bit of a silly boy ! During living room redecoration, I took the opportunity to channel the rear speaker cables into the wall. Trouble is I now can't tell whether the protruding wire ends are "black" or "red" and so don't know which way around to attach to the speaker terminals. I put my amp in "5 channel stereo mode" and listened with the wires round both ways but couldn't hear any appreciable difference - should I have done ? I thought I understood that it does matter which way round speakers are wired. Is this right ? and if so can anyone please tell me how to tell the ends apart / spot the sound difference ? (short of ripping the cables out of my lovingly plastered wall ! Thanks, Simon.