Hi all. I need your help wiring this 4x12 cab. I bought an empty Peavey XXX cab and I want to load 4 ( 8 ohm- vintage 30's) inside it. The input jack in the back is confusing me. There are no labels on it, 2 input jacks (or 1 in 1 out im guessing) and a center switch (speaker damping?). 4 wires coming off the back of the jack, 2 on each side. Here is a diagram I drew, need someone to help connect the dots. I've spent the past 2 hours searching the net and cannot find a wiring diagram for the XXX 412 cab. This will be going into a JSX that has 16/8/4 ohm cab selector. Please help.