i know the dude that makes that ck12 and he really doesn't get how the chambers work, so it's gonna be ages before he figures it out
That's a shame. Here's hoping that 3U audio comes through! That, or you produce a CK12 and/or Tim starts selling to DIYers again!
I can really recommend OPR, Beesneez and Haun. All three are in the top league...there are differences, but to me they all sound as I would expect from a highest quality CK12. The China Xingde C12 sounds good in my opinion, works very well with Siemens Halske ECC801S and 3U OT, but the off-axis speaking direction is really strange. In Cardioid the capsule picks up sound from the side and from the back in an atypical way, picking up far too much content and shrillness. Difficult to explain. The mids are also a bit more present than with all the other boutique C12 capsules I own. I would buy them if I'd get these for 100 bucks or so. Anything more than that would be too expensive.
You explained it great. You can mess up CK12 in so many weird ways it's almost fun exploring how strange you can get it to behave.
Thank you for that description! It sounds like it might be fun to play with.
Any idea what AKG were trying to accomplish with such a complex and unusual design?
more correct patterns, mostly. if you get it right, it has really stable patterns.
I assume you're referring to patterns remaining similar across the frequency range?
yes, the two cardioid capsules have superior all-band rear rejection, so they are better at building patterns
Which is something rather rare in LDCs; so makes sense they would not be simple to make.
moreso they just did it a difficult way because of manufacturing limitations back then
Austrian Audio claim they made it. I am not sure, i see it follows the same principle but it is different. AKG tried doing it, and not many know Neumann's k67 is actually inspired by multi chambered design of CK12. Hence the spacer between two halves not present in k47.
