Although I have a good understanding about matching speaker cab impedances to amp ratings (two 8 ohm cabs = 4 ohms, etc.), I'm a little rusty on the nuances of running speaker cables in parallel vs in series. Assuming you have two 8 ohm cabs rated at 350 watts each, and one amp, when would it be appropriate to run the cabs: scenario #1: in series, with what would seem to be a custom wire job, as shown in some speaker manufacturers' electronics diagrams? scenario #2 by connecting one cab with a cable running from the one of the amp's output jacks, and connnecting another cab with a cable from the other amp output jack? scenario #3 by connecting the first cab to one of the amp's output jacks, and connecting the second cab by running a cable from the first cab to the second cab? Thanks in advance for the details.