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.
Frequency range 20 Hz – 20 kHz
Sensitivity 16 mV/Pa
Equivalent noise level (A-weighted) 11 dB-A
Equivalent noise level (CCIR) 23 dB
Signal-to-noise ratio (A-weighted) 83 dB-A
Maximum sound pressure level at 0.5% THD 130 dB-SPL
Length 22 mm
Diameter 20 mm
Weight 17 g
Surface finish matte gray (g) or nickel (ni)