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AKG genuine CK12 Brass capsule: building DIY mic with a single Jfet-transistor

I have got discovered vintage AKG CK12 Brass capsule at home.

I would like to build a mic with this capsule and use a standard one-transistor Jfet circuit of ECM electret mics (common source either
source follower)...

Has anyone ever tried to wire such a large capsule with a single Jfet transistor ? Do you think this might work as a decent condenser mic ?

AKG 451 E

I'm asking the aged brains here - I bought an old AKG 451 E off ebay - clearly liquidated stock from a failed audio company - but mainly because 1. It was black and all mine are silver, and 2. it had the metal slide on basket windshield. From the pictures it had a CK1 cardioid capsule.

AKG A-51 swivel (knuckle joint) for C451/CK1 etc...

Hello,
I'm looking intensly for an AKG A51 swivel joint to mount CK1 on C451 bodies angled from the axis...

Seems to be difficult to get these days (I don't know why so many companies discontinue their cool stuff!)

If you happen to have one in good working order and would like to sell it, please contact me...

best regards
Robert

AKG C451E and C460B with different capsules (CK1, CK1S, CK3, CK 61, CK22, CK62)

Hello, I'm new here and I don't know how much interest for this kind of stuff is there, but anyway: I did some comparisons between different combinations of AKG bodies and capsules; the file names are more or less self explaining.

460JW is Jim Williams moded 460B body, 460Stock is the stock body, and which capsule is attached you cen derive from the file name.