mb150s

I guys, I have an issue with my amp that after a few minutes of playing i get no sound on the speaker and no sound on the external speaker but i still have the signal on my direct out (XLR) output. I tried to hit the amp with my hand just the test that there could be a loose joint and that...

I first heard a MB150 live outdoors in a bar/restaurant and totally thought it was running through the PA, massive sound for a little box. Found the same amp at school, the MB150S-III model, and was blown away again. I play mainly electric bass, learning upright. I've been using it at combo...