It happened during rehearsal -- all I'm getting out of it now is a farty, distorted noise with very little sustain, it happens with both of my basses and cables, so I think I can rule out empty batteries or broken cables. Does anyone know what could be wrong, exactly what I broke and how to fix it? I don't think it's the speaker, it definitely sounded different when I messed up my old 50 watts practice amp's speaker. I really loved that amp, it had a good, clean sound with nice highs and lows. It only has a 12 inch speaker, but I hooked it up to a no-name 2x15 cab for a serious low end boost. It's a solid state amp, by the way, and I think it should be about seven years old by now. Any advice? Lots of thanks in advance.