Hi all, I've been playing my Kemper (non-powered) connected directly to PA, during rehearsal with my band, since a couple of months. I use left main out XLR into a MIC input of the mixer, selecting Main Mono from output source.
The singer is connected to the same mixer (Sonic Station 16). Both signals (Kemper and singer MIC) are sent to Main L/R. I've checked many times the signals, no clipping, even during the most loud parts. Kemper channel is set at gain 0 on then mixer (no preamp engaged in theory), I just adjust the volume with the rail. Main output on Kemper is set at -20db.
The PA is a Bose L1 mod. II.
For some reason, the Kemper signal is covered by the singer during the songs. It is not only a drop of the volume of the guitar but also a drop of some frequencies, as if a compressor is engaged. If the singer is not singing everything comes back normal. I do not understand if this problem is related to the mixer, which is a bit old, or it is how I set my Kemper. By the way, the Phantom Power on the mixer is OFF.
Any help would be great. Thanks