Why did the left channel sound so different from the right one?
Left one (Kemper) sounded a bit harsh. Right one (JCM) was a bit fuller, yet sounded a bit dull
This had me stunted as well, intially. But I am guessing they didn't mic up the cabs exactly (tonally) equally The reactions of chappers and Lee didn't fit with the difference in tone, so I must assume that in the room they sounded much more like each other.