I have a head (Peavey Max 450) that is safe to run anywhere upwards of 2 ohms. I know the speaker outputs are wired in parallel. I have 2 8 ohm cabs which makes it run at 4 ohms. I'm getting 300 Watts at 4ohms. My question is, is it running each cab at 300 Watts, or is each running at 150?