Sweet, thanks for the links Sam! I will order some of those resistors and headers up and try them out. It really isnt that much work to put those together. I do like to be able to build a few different ones and be able to play around with the XO points easily.
You know, I forgot to ask Scott about the sub setting, must have been too excited to get the other drivers working. You mention a 10Hz "overlap", have you done this before and how well did it work? Was the imaging like you say? Again thanks for the info.