I'm buy the Orange Terror 500w head for a low price and want to know what you guys think would be a good cab for it. I was thinking a Markbass 2x12? Can I use any cab? On the Orange website they say the options for cabs are: Speaker Output options (Heads) 1 x 8 cabinet (impedance switched to 8 ohm) 1 x 4 cabinet (impedance switched to 4 ohm) 2 x 8 cabinets (impedance switched to 4 ohm) Does this mean the head only supports these size cabs? If so let me know because that would suck..