Hi all, Long time from my last visit here. I kindly ask for your help ;-) I have a problem with my Hartke kickback 15. I love this combo, I know it´s now the best in market but it´s easy to use, have a quite good tone for the money, and it´s built like a tank so you can gig with it. BUT, after all, it seems it´s broken. The head it´s ok, I have tried unpluging the head-cab cable and it works fine with earphones or with other cabs. The broken part must be the cab. When I turn the volume up to 4 or 5 it begins to crunch, like a natural distortion. I can´t play this way, the sound is crappy. This combo has head that delivers up to 120 watts to max 8 ohms, and the built-in cab is a 150 watts 6 ohm. I would like to know if anybody has been through any similar problem with this or other similar combo. Any idea of how to do? Any way to try to solve it? I could buy another cab, but I don´t think it worths it, maybe it´s just time to buy another combo. Any help will be really appreciated. Thanks in advance.