So I just received my Archon and I was reading the manual like a good guy lol, and came across in the 100 watt mode with a 8 ohm cab to select 8 ohms. (Yeah duh, haha!) but in 50 watt mode to use the 4 ohms with the 8 ohms cab? Am I understanding that correctly??? I am using a recto 2x12 at 8 ohms and will use the amp a ton at 50 watts, and I just don't want to have any issues caused by my newbie-ness.