Hello all,
I just got my Kemper unpowered head and am shocked at how good this thing is and how easy it's been to use. My only issue so far is with the combination of the KPA and studio monitors I'm using (KRK Rokit 6 - 1st gen). When I approach what I'd consider a moderate volume range, I start getting a nasty buzzing sound on some of the lower notes on guitar: worst is low E string @ 12th fret, second worst is open low E, happens more infrequently elsewhere on the low E string. Occasionally happens with dyads on the A+D strings also. Seems equally likely to happen with clean or overdriven profiles and with single coil (low output) or HB guitars.
The quality of this sound is somewhere between buzzing and a really fast rattle and sounds like it's not good at all for the woofer, so I've resorted to turning the KPA down to avoid it, which does work but is way less fun. For reference I've never been a "cranked amp" player, mostly bedroom and smaller jams, so my definition of moderate volume is pretty quiet by most players' standards. It's weird because I can play recorded music at a higher volume than this through these monitors without problems, but I'm sure there are differences between that signal and what the Kemper puts out.
I'm plugging the KPA's main output straight into one monitor (to avoid an unrelated issue with my Scarlett 2i2 inputs clipping, new interface is inbound to resolve that) so there's nothing else in the chain at this point. I'd appreciate any thoughts on whether this can be resolved or if it's just a limitation of woofers this size. Thanks!