Hello, did anyone find a solution for this? I am having the exact same troubling result with two new Kones I bought last week and installed in a 212 cabinet. I have verified speaker wiring (in series for 8ohms and correctly in phase) and my Kemper settings ('Cab' on in Stack, 'Monitor Cab' off, 'Kemper Kone' on) and I'm getting the same thin, weak, unpleasant tone that others describe in this thread. I've updated to the latest OS version (8.2.2) and done a "reset" following Yam's post above - no improvement. I'm using a tube power amp (ValveTrain PowerTrain Studio 20) and I know solid state amps are recommended for flat response, but I can't imagine this would explain what I'm hearing. Thanks