I have not been around here in a while. I am glad to see Freespeakerplans.com still exists.
I not one of the pros around here, just someone with lots of live sound experience and interest in the designs.
I do not know if anyone will even remember me, but I was the OP asking questions that sparked some interesting conversations on theory at one point...
Truthfully though, what made those conversation so interesting was the expertise that was explaining things to me...