What kind of resources do you mean? I have prototyped active filters with opamps before, and I understand the theory behind the passive filters. Equipment wise I can etch circuit boards and solder on the SMD resistors/caps so I can fit in a more complex crossover.
I'm still considering MuZo's words of wisdom, and perhaps go back to a TWFK/DTEC combo like what's in my old W4. It's just so tempting to experiment with the CI for the low end.
The main thing is that CI+WBFK = TWFK in terms of cost, and the downside is added complexity in crossover design.
I've already read all the documents from the other thread, and come to the conclusion the crossovers are really just for cutting the response very roughly, and not for tuning. The acoustic properties of the material I use, sound tube length, and tube diameter seem to impact the response even more than what I can implement with passives. I'll finalize a design and post it up here for comments, then see about ordering everything next week.
I'll attempt something I saw a few pages back with a separate active filter/amp in the future.
*One thing though, where can I find this acoustic tubing for the drivers from Asia?*
Edited by vector1 - 5/31/14 at 5:18am