HELP!!!! What is the limitor used for? When the limitor light comes on, what exactly does it mean? I've read a couple articles about what limitors are, but still, I am lost. I have an SWR 4004 Bass Head. During rehearsal last week, the green "Limitor" light started flashing and then the entire rig lost power. Can someone explain it to me as if I am a 4 year-old?