So I finally have a set up that I'm happy with, it sounds great. Its a Factory Restock Acoustic B410 Cab (400w at 8 ohms), with an Eden Nemesis ENX 260 Level 1. used(260w at 4 ohms). The head was doing something weird when I started playing (with my drummer friend), I had the gain and volume on 4 (about 10 o'clock) so it was not like I was pushing the thing or anything. All the sudden the amp starts lighting the light that's never supposed to light and I stopped playing and fiddled with the knobs, it went back to normal and I kept playing. Now this is about the 4th time I've used my set up because I live in a town house ( I keep it at my friends house). All the sudden my cabinet starts making like this....high pitched frying kinda noice, it's a little bit like a squel but worse. So i'm thinking I somehow blew a speaker even though I wasn't pushing that hard. What do I do now, Should I call MF where I bought them and complain or am I doing something wrong??