So I am using a room roughly 3m x 3m, acoustic foam bass traps, wall treatment and celing treatment and monitoring on Yamaha MSP5.
I measured with Arc 3 using a Behringer ECM8000 (yes I know but research told me it was okay).
I have done it 3 x just to rule out user error and made sure the Pre Amp wasnt using any processing and Monitoring of the measurement mic was off etc.
The playback with Arc 3 on my DAW is much much bassier which is kind of the opposite given I previously had issues with reflections etc. Worse still while isolating a bass guitar track the Low end frequencies with Arc 3 on are overdriving my monitors.
Only one possible cause, I noticed the calibration file I had been using for the mic is probably corrupt as it converted from a rtf to txt and left in formatting code. But I would expect that rather than affect the reading?
The before after curves in Arc 3 appear to look okay (I cant find an easy way to share).
PS I cant upgrade to Arc 4 as I am still on High Sierra...