@marcan@treehouse.systems Since you seem to have a great setup with a reference mic already - mind recording how this off-by-one actually sounds like? As in, how it distorts the ~300Hz range. Spectra are great but I'd love to hear it (mostly to figure out whether I'd have noticed it or not)
If it takes too long, I guess I can call this an excuse to learn more about audio processing and try to replicate this myself