Anyone with knowlege of Sonic Bass Cabs? I've got a pair of cabs, each with 2x10 and 1x18m all 8 ohm speakers. It looked like they were wired in parallel, but im not positive, and it seems that would make the resistance wierd, like 2.6 ohms or something. I've never been good at that. Anyone see these? Know the wattage or ohmage? I plugged one in through my GK MB500. Sounded a little farty. Am I underpowering it? Thanks!