I have two Avatar B210s that I sometimes run together as a vertical stack. One has the basslite neo drivers and the other has the kappa pro drivers. Performance is excellent but the kappa loaded cab isn't near as light as the neo cab obviously, and I would like it to be. So I'm thinking replace the drivers in the kappa cab (and then sell them) as opposed to getting another cab. I'm guessing that the kappa has 16ohm drivers wired parallel as opposed to 4ohm drivers in series (8ohm cab), but I won't know that until I pull them. The only descriptions for the neo drivers that I see online say "8ohm nominal impedence." How can I be sure that I'm getting the right impedence drivers when I order from somewhere?