And a few graphs.
This is the first anechoic chamber visit for the Saranna, so these measurements are not final. They may get better, but they may also get worse, at least at any individual axis, since I prefer the sound of mild corrections combined with focus on the totality of the measurements rather than hammering on-axis flat. It also sounds like this speaker will sound most balanced when it's quite flat, so I may end up with slightly less bass than on these measurements. That can be customized by the customer as well of course.
This coax is somewhat untidy directly on-axis. Luckily on-axis will not be the reference/listening axis, and it also smooths off quickly off-axis.
Also note I had to measure the speaker upside down since the microphone didn't go high enough, and the bass port is then up in the air and on the rear, so the measurements don't seem to have captured the port output very well. Further, the chamber shows ~4dB less bass at 30hz than the Klippel NFS (thanks
@AscendDF for that information). There's a measurement towards the end showing the bass measured from the front vs the rear. Simulations with VituixCAD indicate F6 of 26hz which is likely more accurate than these measurements.
All graphs are 1/24 smoothing, which I understand is what Amir typically use.
0 degrees:
15 degrees (listening/reference axis):
30 degrees:
60 degrees:
10 degrees vs 120 degrees to show an indication of the directivity
Bass measured from at 0deg and 180deg (Red), the latter showing more of the port output, with 7-8dB more at 20hz: