Here is a very simple crossover that provides flat response and excellent phase tracking using 3rd order acoustic slopes.  I believe the Geminis sound more focused and balanced with this design, although it sacrifices the real or imagined advantages of 1st order slopes.

Remember—there really are not any resistors in series with the inductors.  The values you see merely specify the target resistance value for a particular inductor.  For example, the .19 Ohm value for the woofer series inductor can be achieved using a 14 Ga Perfect Lay air core.