Yes, each mic is individually calibrated by Beyerdynamic.I just found out about this mic. Before I take the plunge, I wanted to ask whether anybody has a handle on whether Beyer calibrates each individual mic in the manufacturing process (made in China?) or whether they have a one-size-fits-all calibration file for a "typical" mic that they give anyone who asks. This is what I suspect, but can't prove, the other company "B" does with its measurement mic. I can't imagine that for $200 Beyer calibrates each mic on the assembly line but what a pleasant surprise it would be if that were the case. Maybe I'm dreaming.
I face the same dilemma. I hve two ECM-8000s, each calibrated by Cross Spectrum and by Kim Girardin. There are significant differences at the extremes of the band to be sure. The quandary is, which calibration is more accurate?my MM-1 calibration with its cal file did not compare well to my Dayton EMM-6 with its cal file from Cross-Spectrum Labs. My measurements are very repeatable and there is a 2 dB difference at higher frequencies. The chart below shows the difference of measurements using the MM-1 compared to measurements using the EMM-6. These are repeatable speaker measurements using the respective calibration files. If both mic calibration files were accurate the line would be flat at zero dB.
Read more: http://www.hometheatershack.com/for...alibration-beyerdyamic-mm1.html#ixzz2W0yIsmnO
It would be more accurate to say that the variability between the two labs gives me pause.you have seen more variability from 2 CSL calibrated mic's than the same 2 mics calibrated at another lab