Hi all. Lately I've been working on a hybrid MLTL box that has a single 180 degree bend with no filling, just a completely empty duct to experiment and understand what happens inside. Previously I had built a BR box using the same speaker (without tweeter and without crossover). In both cases I made some measurements with REW obtaining graphs of SPL, distortion, harmonics and impedance, obtaining different results. I wanted to compare my results with those obtained by other people who have built transmission lines. In particular I am interested in the distortion and harmonics graph. I searched online without finding anything, this seems strange to me, perhaps I have not looked in the right places. What do you think?, are there people in this forum who want to share their data?. Ciao and thanks.