I'd like to start my first thread thanking all developers and supporters of REW for their great job. I started using it for DIY speaker projects (and only them as of yet) and am fascinated by the functional range of this freeware, but got to a point where I couldn't help myself and didn't find any answers online neither. I must admit that I am not too familiar with using REW (yet), so please pardon if my question is just to obvious to be asked in any other thread (or I didn't find the answer in another one). I am trying to configure a passive 3-way frequency crossover for a new DIY speaker with LSPCad. For simulating the frequency response, I need a .txt-file with 3 columns frq - SPL - (min) phase and frq - mag - imp. The impedance measurement I conducted with a Klippel-system, the SPL using REW and the UMIK. I ended up with 3 measurements each for woofer, midrange and tweeter. When trying to export the frq - SPL - (min) phase as .txt I realised tat I couldn't export the min phase data. I tried the workaround (export min phase as .wav - import impedance - export .txt) but the phase graph does not match with the original min phase. When creating a min phase version of the imported impedance, I do get the original graph though. If its of any help, I could add some screenshots later. Q: Is their any way to export the required .txt file with the original min phase data in 'frq - SPl - (min) phase' format? I am using REW v.5.19 Thank you in advance.