I have a Crate bt220h head and a bt115e enclosure. I was jamming earlier today pretty quietly and mid song my amp started playing at about 1/4 of the normal loudness. the clean chanel sounds like complete **** now and kinda muffly while the distorted chanel is super distorted even when the gain is hardly turned up any. Does anyone have any idea what the problem might be. I'd really appreciate any help.