video corpo

Measurement microphone 4191

measurement microphone
measurement microphone
Add to favorites
Compare this product


Other characteristics
free-field, 1/2", pressure, frequency, polarized


½-INCH FREE-FIELD MICROPHONE, 3.15 HZ TO 40 KHZ, 200V POLARIZATION Designed for high-precision, free-field measurements where a 40 kHz bandwidth is required. Type 4191 is designed for high-precision, free-field measurements where a wide bandwidth is required. Being externally polarized, Type 4191 must be used with a classical preamplifier.USE SCENARIOS Precision measurements to 40 kHz Premium class sound level meters Equipment complying with IEC 61672 class 1 USE OF FREE-FIELD MICROPHONESAt higher frequencies reflections and diffractions causes a pressure increase in front of the diaphragm of a microphone. If not corrected for, this would result in an increased output voltage. A free-field optimisation means that the frequency response of the microphone has been designed in such a way that the free-field response at 0 degrees incidence is flat. This microphone is optimised for use with the protection grid in place. Free-field microphones are commonly used for sound measurement in an anechoic chamber or far away from reflecting buildings, etc. Another area for free-field microphones is for general electroacoustic measurements like loudspeaker and microphone measurements.With an upper frequency of 40 kHz, Type 4191 is especially suited all high-precision electroacoustic measurements as well as general acoustic measurements where a robust and stable free-field microphone is required. Despite the 40 kHz upper frequency, this microphone is optimised to operate with the protection grid in place.


*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.