Feedback problems

    Hi everyone!! :)


    I'm going to order a Kemper Profiler (Powerhead) next month but i'm
    writing as there's only one think that is "worring" me a bit about the
    unit.


    I'm actually trying the unit for the first time as a friend of mine has
    given me it for a week to test it during rehearsals with my band.


    Since i've tried it for the first time i have to say that it sounds awesome!!


    Unfortunately, during this week of trial, i had a big problem that i
    wasn't able to solve so..i hope that you'll be able to help me.


    I mostly play high gain stuff and i have a Music Man JP7 (Di Marzio
    Crunchlab/Liquifire pickups) and i'm finding a lot of feedback problems
    with high gain profiles but even with some crunchy profiles with a
    natural boost before the amp!


    I'm using a Powerhead Kemper + MM JP7 + 2x Laney Ironheart Cabinet (16ohm)


    I also tried to use the main output + Brunetti Silver Bullet Power amp +
    Cabinet (thinkink that maybe it could be a problem of the power amp)
    but i can't find a solution to this problem even if i add gates (too
    much gain cut off the sound anyway..) and lower the gain...


    Obviously the cab sim is off and i also tried some different DI profiles with that but with the same results...


    It's not a pickup problem as i don't have any kind of problem like that
    with other amps (i also tried to keep the strings muted in front of the
    cab to see if it could be a pu problem)...


    Maybe something in the input/output has to be changed a lot (tried even
    to lower the distortion sense and the output EQ in the test with the
    addictional PA test).


    I just start to play a single note and...here's the feedback...!!


    I can also try to post a clip maybe...hope to find someone that can help me with that..!!


    Many thanks in advance to everyone and...sorry for the english (i know that it's not perfect..)


    Nick

    Welcome. The obvious questions are: Are clean sens and distortion sens set correctly?
    If so, uncontrollable feedback could well indicate that you are simply using too much gain for the configuration (incl. guitar/PU's/cab/room the cab is in).
    A recording woud be great.

    Hi :)
    Many many thanks for the quick reply to everyone!!


    I tried to switch the ground/lift button but nothing changes...


    I also tried to configure the distortion/clean sense...this helped a little bit but didn't solve the problem anyway :(


    I'll try to make a little clip soon and share the whole rig setting and configuration so you can make a better idea of what i'm using and maybe focus better on what could be the main cause of the problem.


    Thanks again!!!


    Nick