Yup, you can use main or monitor output. I'd use monitor in case you want to send main to PA/FOH.
Don't forget to turn the cab off in the monitor out.
4x4 won't sound very good 
Hello and thanks for the respond.
what does this mean? Don't forget to turn the cab off in the monitor out.?
yeah i am also interested about the sound we will see 
The Kemper has an amp section and a cab section. If you don't turn off the cabinet, you will get the cabinet model played through your cabinet, i.e you get it twice. That will not sound to good. Since you have a proper real cabinet, turn of the cab on the Kemper!
Sorry I was making a bad joke (as always). You wrote 4x4 which typically means 4 x 4inch speakers. I'm sure you meant a 4x12. It will sound awesome.
musicmad NO ! 4x4 means that You have 4 driving wheels (instead of 4 steering wheels like in std 4x12 Mashall cabs),
It's raccomended in order to transmit more power on the floor 
If you use the ''Monitor Out'' output instead of ''Main Out'' output to run the JCM2000 fx loop, it's better to flag with the soft button ''monitor cab off''
You find it at page 1 of the Output section Menu (press the button OUTPUT and use the PAGE button to go there)
oh yeah 
now i got it. i meant 4x12 not 4x4. Sadly i just have a bicycle so thats 1x2 
ok great. thanks for the information.
Hello, another question. It there a setting, that i can turn off the stack for my rigs temporary? for every rig? Or do i really need to adjust every rig by itself?
Thanks
Do you mean the entire stack (Amp, EQ and Cab)? If yes, you can turn off the stack in one rig and then lock that setting. This will apply to all your rigs until you unlock the stack again.
