Right now I've got a pair of Fostex FE167's on open baffle on top of the 2226 cabs, using a Parts Express 500hz 2nd order crossover. Sounds pretty good. I'm sure given our icy weather, I'll be having some more time to play with this over the next couple days. In the mean time, quick question for Wayne or other smart guy: do I need to reverse polarity on the top or bottom to make it all in phase? I seem to remember that the 2226 is backwards or some such thing? If I just keep all the +'s and -'s stright through, are we okay, or one needs to be swapped? Thanks!