MK 301 E

Common name: Microtech Gefell MK 301 E

Production Status: In production

The MK 301 E is a 1/4” measuring microphone cartridge designed for acoustical measurements in research and development and also for industrial use. Applications include audiology, the measurement of building acoustics and noise levels. The microphone cartridge has a fixed layer of back electret to supply the polarisation voltage. It is designed and manufactured to ensure excellent long-time stability of the electro-acoustical 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 equalisation of the static air pressure between the inside and outside of the cartridge is achieved 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 MK 301 is designed for sound level meters of IEC Type 1 according to IEC 61672. Includes wooden box.