What's the difference? I'm just not getting ohms vs. watts for rating amps and speakers. I have a Maz 38 head... (at 38 watts)- can I put this into a 16 ohm cab with speakers rated at less than 30 watts? Also do ohms and watts have to match? For instance- I just bought a 16 ohm cab, with a speaker in it that reads 8 ohm. I'm just not understanding.