The box modeled well enough in BassBox Pro.
I'm using Hi-Vi 14 B3S Mid bass and one Fountek Neo 3 Ribbon.

I also Modeled 4 drivers in series and 3 drivers in series and worked out the average parameters of the two. Then set the average parameters up as one driver. Used the average parameters and set it up as 4 drivers in parallel. Model a simple Xover in Xover Pro to get started.

Question: is baffel step the same as regular speakers?

Once I have finished the boxes and simple Xover I will will take measurements with Just MLS and see how I could finalize in LSPCad.