So i did a small comparison between 4 traces taken with 4 ISEMcon 7150 mics on my PMC studio monitors. I only synchronized the first measurement and after that i copied the time on every new transfer measurement/mic. After that i adjusted the mic position in order to match the phase response as close as possible to the original trace to get the mic at the same distance as the first measurement.
This is absolutely no lab test ! please take note of that.
SMAART7 has the option of importing a calibration file (all ISEMcon mic’s i have come with a USB stick with the cal files on it).
First mic (no cal file).
First mic with cal file vs the no cal file.
Second mic (no cal file).
Second mic with cal file vs the no cal file.
Third mic (no cal file).
Third mic with cal file vs the no cal file.
Fourth mic (no cal file).
Fourth mic with cal file vs the no cal file.
All 4 mic no cal files applied .
All 4 mic cal files applied .
All 4 mic no cal files applied zoom.
All 4 mic cal files applied zoom.
All 4 mic cal files applied zoom with a level correction on the fourth mic .
Again this is not a lab test.
So these are transfer functions between 2 mic’s. The pre amp used is a Smaart i/o. The mic with nm 326 became my reference (because it was the first 1 i took out of the box so no special reason what so ever).
I tried to get both mic capsules as close together as possible and made a transfer measurement.
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I would be curious to see a transfer function measurement comparing the iSEMcon mic’s to a high-end mic such as a DPA 4007 or similar… Thanks for doing this!
I can do a transfer function between the emx7150 and a dpa 4007 since i have a matched set of 6 d-a 4007 mics.
The only challenge doing this is getting the mic capsules close together. The dpa has a larger capsule so the data from a transfer will be questionable