Quote:
Originally Posted by
Soundman2020
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He's giving you good advice! He's also one of the few REW experts around here....
Studio acoustic measurements should always be done with a proper measurement mic...
Thanks Stuart for the kind words.

I have found this and other acoustical Forums very interesting and inspiring learning places and want to give something in return. Learning is fun!
So many different rooms and folks struggling with their room measurements. Comparing thousands and trying to find out what’s wrong is a good exercise.
(But honestly, I have a suspicion the ”teacher”will learn the most...

)
A strength here is that so many members use the same software (REW) which means we have a common platform and can discuss results and different ways to tweak or present the results.
That would be quite tricky if members use many different acoustical software.
@
Ronny
In addition to Stuarts comments about a typical measured empty room result,
I found your first measurement heavily distorted for some reason.
Total Harmonic Distortion (THD) is around 10% (≈20dB below fundamental) See pic below.
May be you’re sweeping too loud (with small loudspeakers), or the signal is clipping?
RE measuring microphones. Cheap and precission don’t usually go together.
Does it matter if the mic is +/- 5dB across the audible range?
All gear have tolerances. It depends how picky you are...
A 100 € mic will be fine for the job if supplied with a calibration file.
Be prepared to make many measurements and minimize risk to drop your more expensive 214.
Cheers