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Two 0 deg. calibration files for 1 UM IK 4 years 9 months ago #35500

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Hi - I bought my UMIK-1 serial no. 7003682 back in Jan 2014 and downloaded the required calibration file. Today I've just started reading a "Getting Started With REW" pdf downloaded from AVNIRVANA. In that PDF is a link to your website to download calibration files for UMIK-1s. I downloaded the cal. file for my UMIK and was surprised to see the latest file has different values to the one I downloaded in 2014 e.g the new file has "Sens factor = -5.538db" whereas the old file has "Sens Factor = -21.2db"! Also, all the values for the frequencies are different.
Which file should I use and why are they different?

Thanks.

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Two 0 deg. calibration files for 1 UM IK 4 years 9 months ago #35522

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@ ermesy

Based on your record of purchase, that UMIK-1 was purchased very early on, i.e. when REW calibration wasn't yet standardized.
Once we worked with John to calibrate REW + UMIK-1 over all OS revs, then we updated all sens factor in that first batch.
Bottom line, use the latest version from our website. That's the correct cal file. :-)

DevTeam
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Two 0 deg. calibration files for 1 UM IK 4 years 9 months ago #35524

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Thanks - I've used it and was able to confirm with an SPL meter that it was measuring accurately.

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