How was the mic oriented? Pointing up with a 90 degree calibration file and moving for a spatial average? Or aimed forwards and still?
according to those graphs you have you have 60db less treble than you have bass, at most that should be 25db and that would represent a fairly bass heavy tune... for example the audiofrog house curve is approx 20db between 20khz and 40hz
so either your aren’t actually using the umik as the mic or the calibration file is very wrong!
if I do a quick knock up by ear with 1/3 octave tones I can normally get 20db between lowest and highest... does it recognise your umik when you open rew? Are you using the latest version of rew? (I use version 5.20 beta 30 from AV nirvana forums which host all the rew updates and beta versions
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