In my time playing bass Ive learned alot of things about different pieces of audio equipment, but one of the things I cant seen to figure out is ohms. Im in the process of buying a small gig rig. The head im planing on getting is a Markbass Little Mark II, which from what I understand can operate at 8 or 4 ohms. If I get 2 cabs that operate at 8 ohms would both the cabs have a combined resistance of 4 ohms? 

