Thanks again everyone.
I appreciate all the responses.
I do have my Mesa/Boogie Stereo Simul-Class 295, which is one of the best power amps out there i have found. The reason for not using it in a live setting anymore is the weight and size of it. I used to tour with it powering 4 4 x12 cabs. Slightly ridiculous but it's a very powerful amp (costs a fortune to revalve)
I would be very interested to hear how the KPA sounds through this instead of using the built in power amp.
I will try profiling some of my own amps i think using the suggested methods. I'm glad other people have experienced the same concerns as i am now. I guess it's just a case of getting used to the change from moving from the traditional setup.
Thanks again everyone. I think without the help/advice/chat from the forum that i've had i'd probably have given up a while ago. Cheers.
I also have the Mesa Boogie 295, but my Kemper Rack is the unpowered version. Also had the Studio Pre, now got a Triaxis. My band uses my EVH 5153 100 watt.
I used to tweak at home all kind of 5153 profiles (tru nearfield studio monitors), sounded great. Until I brought the Kemper in the rehearsal room and connected it to the return (power amp) of our EVH 5153. It was awful, too trebly. Using the Kemper as a preamp and A/B'ing it with our EVH I realized the 5153 profiles sounded best (on the 4x12 cab) without any eq. With the Mesa 295 I liked the Kemper/295 better than the EVH.
After that I took the uncolored profiles as the basis and tried all kind of cabinet profiles. And played them really loud over my studio monitors. What seems dull/muffled at bedroom level will sound good on higher levels (on a PA). The PA loves the mids in your sound , so pump that up. Put some hi- and lowpass (its in the master output settings) on the master output.
So I did it the other way around. First I got myself a killing sound tru the 4x12 and Mesa295, then I searched for a cab profile that needed not much tweaking to sound good in a venue.
Ps. I have tried the Matrix GT1000FX (also have a loud drummer) but it was no match for our 100 watt tube amps, the matrix couldn't keep up volume wise.