i finally found a coliseum lead - one of the later red white and black ones. really nervous about what i plug this into because the back outputs are not labeled. there are four outputs across the top back - if anyone can tell me what each of these are.. and the corresponding impedence, i would be seriously so grateful. i have a 4 Ohm cabinet that im worried might wreck somthing, and also dont know where to plug it. so desperate for help.