TELEFUNKEN Mics on Twitter: "At the heart of the ELA M 251E and C12 is the CK12 capsule. Each one is hand built to historic specification right here in South Windsor, CT,
CK-12 Capsules - TELEFUNKEN Elektroakustik
Dachman Audio CK12 Series 2 Mic Capsule - For DIY, Upgrade Replacement C12 RK-12 71238386556 | eBay