Its me the crossover noob again with yet another question. In the graph below. The area I have circled. What does that mean? Is this the driver being out of phase? I appreciate all the help and wisdom I've been given so far. It's been quite the journey. I hope someday to be able to help someone else the way yall have helped me.
The phase gets wrapped to -180 degrees to +180 degrees.
On a steady-state sine wave, you can't see any difference between -181 degrees and +179 degrees of phase shift, as the resulting waveforms are exactly the same. Plotting routines therefore often map a phase shift of -181 degrees to +179 degrees. On a plot with a phase shift that goes down gradually, you then get a sudden jump from -180 to +180 degrees. In your case, there is a bit of a ripple around -180 degrees, so you see it jumping up and down a few times.
On a steady-state sine wave, you can't see any difference between -181 degrees and +179 degrees of phase shift, as the resulting waveforms are exactly the same. Plotting routines therefore often map a phase shift of -181 degrees to +179 degrees. On a plot with a phase shift that goes down gradually, you then get a sudden jump from -180 to +180 degrees. In your case, there is a bit of a ripple around -180 degrees, so you see it jumping up and down a few times.
No, it is just the graph wrapping around from -180° to 180°.
Wiggles show up as zig-zag line.
This ist the way phase is usually displayed.
You can probably also switch phase wrapping off.
Furthermore phase is always (correct me if I am wrong!) relative, related to another signal, e.g. the input. There is no absolute "correct" phase once you are measuring at a distance from the speaker. You always have some time of travel.
