Im not a professional at this or anything but from what I understand and use with my amps(I would like to think im right)
If your using one input, switch your cab to mono and plug your Wire into the 16ohm input on your AMP and connect it to the 16ohm input on your CAB
If you want to run it parallel using two wires, Switch your CAB to "stereo" and plug your wires into where it says 1x8-2x16ohm input on your AMP and connect them to your CAB
Make sense? I hope I do
