Like I don't trust programs at all. All it is is sound. It's just controlling compressions and rarefactions cycling. Each woofer has a nature about it, which you can largely determine from the t/s.
Horns just aren't attractive to me. I've caught the attention of audio engineers with PHD's before, and even some of them love ported over everything, even for like $25,000 guitar speaker cabinets, etc. Really ported just is the most effective way to boost and hold sound, or a t-line, anything that simply phase shifts the rear wave. Horns get into weird dynamics.
They can be extremely efficient, but the size and and what all your limitations are with horns, they just seem rather useless.
All horn lines are are segments of air that each have their own resonance. What I've yet to explore is the relationship between expanding cross sectional area and the ratio of the expansion vs the effect it has on tuning when the port is tapered.
If I was going to do horns I would come up with my own method.
I think it's better generally to take the mind state of an enclosure that is healthy for the woofer vs. trying to perfectly match it with the enviroment. You want the woofer to love it's home, to be happy. That's, IMO, is what makes the best playing boxes.
