I'm putting together some speakers which started out as a Cornscala project but has changed a bit since. I have ALK ES500 crossovers which I am still planning to use but I'm now thinking of adding a tapped horn below 90 or 100 Hz. I would like to use a passive crossover for this. Is there any way of doing this using some kind of generic crossover. I have Crites K33 clone woofers to use above 500 Hz and I'm thinking I may be able to use these in the tapped horns also. If no generic crossover will do, as I suspect is the case, where do I start with designing one?
Edit: Crites woofers to be used UP TO 500Hz.