Microphone capsule MK 2
Please note that there is some directivity at high frequencies due to the physics of sound wavelengths. Thus even with an omnidirectional microphone, it still matters which way the capsule is “aimed.”
The MK 2 is often used for acoustical measurement, an application for which it has gained a considerable reputation.
A mechanical adapter (type AMBK 1, from 20 mm to 1" diameter) is available for calibration with B&K devices. Please note that because of dimensional tolerances, only the nickel-finish version of the MK 2 can be used with this adapter.