The Model 377A13 prepolarized, 1/2-in. pressure-response-type microphone operates from ICP sensor power and offers an extended frequency capability of 4 to 20 kHz (+2 dB). Designed for applications requiring matching magnitude and phase at any position, the microphone can measure changes caused by microphone presence in the sound field, such as those required in confined spaces like small cavities, couplers, or impedance tubes.
(Click on image to enlarge)
Other specifications include a maximum linear dynamic range of 160 dB, with a noise floor rating of 20 dB(A). Operating temperature is -40 to +120°C.