HI, hope you'll indulge this newbie query.

I have a cambridge audio 540A and Sony SACD with Gale floor floor
standing speakers. For a while I've been convinced that one speaker/
channel - the right one - wasn't equal to the other - I cleaned out
all the connections, stripped back the cables again, even swapped the
speakers around, and still it sounds to my ears like one is weaker
than the other - am I imagining it? Or is there another explanation?
I've played around with the positioning and my listening position is
pretty much central.

Any comments appreciated,

Andy