I used X-over 3 Pro to model the crossover network by importing the measured driver data from Parts Express. I had worked with crossovers for car audio, but this is by far the most complex and sophisticated crossover that I have done. My main goals here were to maintain flat response and flat impedance above 4 ohm from about 34hz up while minimizing the parts count and trying to take advantage of any bulk part discount that I could, in order to be able to afford higher quality components.

What I came up with is a second order Butterworth crossover at approximately 2000hz for both the woofer and the tweeter. I also ended up using a 4.2db pad on the tweeter and an RC impedance compensation network on the woofer. The crossover components were all soldered end to end and zip-tied or fastened with epoxy to pieces of pegboard which were then attached with silicone to the bottoms of the enclosures. The exact circuit schematic from X-over 3 Pro is available as a JPG image.