Measurement microphone cartridge MK 301 E

1/4"

The 1/4” measuring microphone cartridge MK 301 E is designed for acoustical measurements in research and development and also for industrial use. Some applications include audiology, the measurement of building acoustics and noise levels. The microphone cartridge has a fixed layer of backelectret to supply the polarization voltage. It is designed and very carefully constructed to ensure excellent long-time stability of the electroacoustical parameters. All essential components including the diaphragm are made of nickel and the diaphragm is bonded by a special galvanic process. The rear electrode is insulated from the cartridge housing by a quartz glass plate. The diaphragm is protected against mechanical damage by a protection grid. The equalization of the static air pressure between the inside and outside of the cartridge is by means of a capillary tube rear-vented into the preamplifier. The cartridge uses the international standard thread 60 UNS which ensures compatibility with a wide range of calibration equipment and measurement devices available from many manufactures. The measuring microphone cartridge MK 301 is designed for sound level meters of IEC Type 1 according to IEC 61672.