The Neumann AK 40 microphone capsule is part of the KM 100 miniature series. The diaphragm has a cardioid polar pattern.
The AK 40 element features a pressure gradient, single diaphragm transducer with a cardioid polar pattern.
The frequency curves are very even and parallel to 0° sound incidence. Sound sources within a pickup angle of ± 135° are transmitted without coloration.
The cardioid polar pattern is highly effective in reducing off-axis ambiance and noise. This allows the element to be used in recording and sound reinforcement applications, in front of stage monitors or instrument miking.
