Not that I have measured, because I have never built one. A member did measure one, but I don't remember who. The measurements agreed with the model. With a sub the model is very accurate, but I would never ever go to the bank with model of a speaker with crossovers.
The reason is that if the T/S parameters are honest, then the model will predict the final product pretty much exactly. That is why I will encourage building of a sub from a model, but only other designs under unique circumstances, like when a guy has the drivers, and I can make a reasonable stab at a viable solution.