CK-13 Capsule
The TELEFUNKEN Elektroakustik CK-13 capsule is a new and innovative development with roots linking it to the aerospace industry, while it is built in the "body" of a CK-12. Aerospace required a new material that was "light as a feather" but as rigid as steel (for obvious reasons). Scientists within this field developed Alloy 2213™ to fill this need.
Alloy 2213™ is an amalgam of Titanium and Aluminum, which TELEFUNKEN Elektroakustik found a way to have sputtered onto a Mylar™ backing so it could be used as a microphone diaphragm material.
ELA M 251T features TELEFUNKEN Elektroakustik's innovative Traditionally gold has been sputtered to Mylar™ for the diaphragms of the historic CK-12 capsule. By employing Alloy 2213™, which is far more rigid than gold, TELEFUNKEN Elektroakustik has developed a capsule that provides greater accuracy in the low frequency ranges of the audio spectrum by attaining a higher damping factor to the motion of the membrane.
Even though Alloy 2213™ has a greater factor of rigidity than gold it is also lighter than gold, and when combined with the edge terminated CK-12 system provides an "airy" and "delicate" representation of the upper ranges of the audio spectrum. This affords the user a higher degree of detail in the recorded sound while still providing the depth of audio for which ELA M 25x microphones have been associated for decades.
After extensive R&D, the perfect diaphragm tuning and fabrication methods were achieved which results in a microphone capsule that can better withstand moisture, smoke, and extreme volume, thus requiring less maintenance over the years, while even more importantly providing the user a superior capture of the sound to be recorded.
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