Ok, I have a line 6 spider II head and a B-52 cab and I've been having problems with the sound cutting off, and I know it's due to speaker impedance mismatching. I've been playing with calculations, and I'm not sure what would work good. The amplifier output is 75W 8 ohms per channel (2 channels) and the cabinet is 8 ohms at 400W (4x12 - 100w per speaker) with two inputs. Can anybody help me figure out how I can rewire it to work?