Phase responses indicate that mic has been ~60 mm above tweeter's axis while measuring tweeter, and ~120 mm above woofer's axis while measuring woofer.
~60 and ~120 mm with simulation to 2 m so Y offset has probably been much smaller if mic was actually at 1 m and Klippel does not reflect all details to 3 m.
I would be a bit surprised if Amir was so wrong with the "reference point" setting of the Klippel NFS.
To get a "feel" for the possible Y-axis deviation, I used the simulations for the Directiva speaker.
Since the woofer is not centered in the vertical direction and as a reference point, the first simulation with the "virtual mic" at 2m distance centered on the woofer. As expected, the vertical frequency responses +-90° normalized to the axial frequency response are almost congruent in pairs.
Now for comparison Amir's NFS measurements of the woofer in vertical direction, also +-90° and normalized:
Up to 4kHz, the positive and negative angles of the vertical frequency responses match well. This means that Amir has actually hit the center of the woofer well in his measurements.
A bit strange are the jagged curves and deviation in the range 700-2000Hz.
If the "virtual mic" had been offset 120mm on the Y-axis at a distance of 2m, one would expect the following vertical frequency responses:
Y-axis, 120mm off
This would result in a significant shift in the vertical frequency responses. In Amir's measurements, however, the range 1.5-4kHz is almost congruent.
Therefore, the deviation of the woofer by 120mm at 2m distance on the Y-axis cannot be correct. However, this does not exclude small deviations.
The 60mm deviation (at 2m distance or 30mm@1m) on the Y axis is almost a bit much. If you look at the vertical frequency response measurements of the tweeter +-90°, the FR of the negative and positive angles are very similar in the 8-20kHz range. With 60mm@2m offset, wouldn't you expect a bigger difference there?
As example here is the same tweeter with 55mm@1m vertical offset. There the divination is clearly visible.
My guess would be that there might have been a slight shift in the Z-direction of the "reference point" of tweeter and woofer.
Or everything is okay and resolves when Rick has his new measuring equipment running.
The measurement of
@hdussen2 should provide a first hint.