OK - back with my REW measurements. This is my first time using REW. I followed Amir's guide (and a few others I found online), but let me know if something seems obviously wrong, or if there is another graph that would be more useful to see (I did frequency, waterfalls and spectrograms).
I did 4 measurements --- the first one had neither room correction (ARC) nor the AVAA active; the second had just AVAA on, the third had just ARC, and the fourth had both AVAA and ARC.
I am curious how the waterfall/spectrograms look in particular since I have trouble reading those.
Two notes based on my very amateur detective work:
- Re: frequency response, the AVAA seems to make the null at 55hz a little worse, but does flatten out some of the other responses (at least a bit).
- Re: waterfall/spectrogram - the AVAA seems to both reduce decay time from about 40hz to 125hz fairly dramatically
- Re: ARC - it seems to have a very positive effect, but it does seem to significantly increase the decay SPL levels under 32HZ, and possibly cause some issues between 100hz and 130hz in the waterfall (I wonder if changing the ARC settings/targets could fix some of that?)