The Neumann AK 31 microphone capsule is part of the KM 100 miniature series microphone systems. The diaphragm has an omnidirectional polar pattern.
The AK 31 features a pressure gradient, single diaphragm transducer with an omni-directional polar pattern.
AK 31 is a free-field equalized pressure transducer. The sensitivity in the free sound field is flat up to 20 kHz. In the diffuse sound field there is a roll-off above 5 kHz.
The pressure gradient element provides an omnidirectional pattern providing even frequency response and output levels.
