Could you provide me with a copy of the Professional Four Pi plans.

I have JBL 2226H woofers and 2446J compression drivers that I would like to build a box for. Actually, I have a 7 ft3 enclosure (~2 Pi Towers) that I am going to partition to drop the volume down to ~3 ft3 per your Pi Align specs unless advised otherwise.

Planning on using a pseudo first order crossover, with an inductor rated at ~1.5mH to arrive at 800Hz. Can I get by with only the inductor for the LF crossover or does the natural roll-off of the woofer occur higher thereby requiring a capacitor as well?

Jim