Ok... here comes another dumb question but here goes. I've got two 8 ohm cabinets and a 4 ohm amp. I know I have to connect them in series to get the effect of four ohms from the two cabs. Do I connect the head to the cabs independently via the two outputs on the head or do I connect the head to one cab and then the second cab to the first one? Sometimes I feel like such a dope!