So... Ok...one more time...most bass cabinets are 4 or 8 ohms. SO ...8 ohm cabs , (from what I have deduced looking at power amp specs), suck up more power(?). For example 460 into 4ohms, and 275 into 8ohms, was what one power amp spec said. So what is the difference other than the power drain, which one is louder, which one sounds tighter/better? AM anywhere close to right on this? Then they,(cabs) are rated at different watts, which means what? Is that the least power you can use to drive it? In other words, lets say I have a cab rated at 600 watts @ 8 ohms, do I need at least 600 watts to drive it? If that is the case, what is the desirable,(if I can use this phrase), HEADROOM? I plan on getting a 2x10 cab with tweeter? thank you for responding to this super age old question, It shows you have a heart!!