Tag Archives: DIY

Knowles EK3029c


This is the microphone element recommended by Old Bird for recording night migrating thrushes, sparrows, and warblers. It is excellent for recording flight calls whose frequency is above 2 kHz, and note that the C1 capacitor is built in. The frequency response of the element can be seen on the Knowles Electronics EK series webpage. The element has a 12 dB per octave rolloff below 2 kHZ, thus greatly reducing rumble from wind, road, or aviation noise. High frequency sensitivity begins to drop off above 6 kHz but this is largely compensated for by the 6 dB gain in sensitivity from the dinner plate reflector.