Strange Vector Average result ...

[FidelioX]

Hi guys,
I'm started to use REW some months ago.
I've seen some many tutorials online but my practice is small.

Yesterday I've taken those two measures and vector averaged them but ....In my newbie opinion it seems wrong ...

the red line is the vector average.
Is it normal that in some points (look at 90Hz) it is drammatically far from the other two linees??
Before vector averaging them I've cross correlated them. So this is not the problem.
I attach for you also the native file.

Let me know your opinion.

Thank you

 

[John Mulcahy]

Is it normal that in some points (look at 90Hz) it is drammatically far from the other two linees?

Yes, those dips are occurring at frequencies where the L and R speakers are out of phase with each other due to room effects. You can use the RMS or dB average to ignore phase, giving a magnitude-only result. If you need phase in the result you could use the RMS+phase or dB+phase average options in the V5.30 beta builds. More details in the help.