I had a gig last night where I could use my head but had to play through the house cabs. Well, after about 5 songs the sound kept shutting off. I'd go to check it and it would be OK then as soon as I start playing it would shut off again. It was awful! My question is: Is there something like a circuit breaker in amps or cabs that keep them from overheating or something if they're incompatible?