Few months ago, I got discovered a genuine CK12 capsule by AKG at home, so the long story in brief.....
The capsule is in a decent conditions measuring 70 and 66 pF capacitances of membranes and I am on the final stage of completing my DIY mic project. I do use FIN mic schematic developed by Russina guy, so based on LTSpice simulation the following figures are the characteristics of the mic: THD=0.000247%, Noise: 1.8971µV
While searching for some basic methods of wiring 2-membrane LDC capsules, found this forum and got a thought to create the theme aiming wider coverage with more alternative schematics.
Perhaps, some of the forum members have done such a cool DIY mic projects in the past and might be willing to share experience.