Is the 1701 not capable of this? I know it’s not very capable in terms of FIR, not much at all in fact. But I thought it was more than capable of minimum phase crossovers. I’ve recently ordered a couple of Wondom jab3 2×50 boards for some 2-way large wall mounted bookshelf speakers I’m doing. I’m pretty sure these boards can be linked up with each other, that way I believe they could be capable up to 4way crossovers, or maybe even more if the input source was able to be duplicated or split with some device of some kind.