No, those are not a Rhodes growling. This is a an actually a speaker cracking/crapping and as I explained it's caused by a left channel which is even visually in the mixer hotter than the right channel. The signals from the left and right channels are very uneven. And it's not a
bad cable or DI box.We tried all options to make sure to eliminate the possible external causes.
I also explained that out of rack of keyboards I only had my Casio crapping the whole PA in the theater while all the sound boards dont show any clipping which drove all the sound engineers totally puzzled. And yes, I was able to minimize the issue with trimming the low gain every time I heard the cracking but I can do it constantly/ I had a 13 piece band to run while playing my own charts and watching the singers to lead the band property, I believe it could be simply a mechanical problem with my PX560 or a software bug and this is what I'm asking if somebody had a similar issue.
Thank you guys!