DPA Microphones 4003

By electrostatic polarization omnidirectional microphone back and not lectret lectret simple, a level of quality while its exceptional sensitivity level of noise, dynamics, with a membrane Diameter rel 10 mm nickel foil thickness of 5 microns crimped. A being protected, however, moisture in storage as any electrostatic microphone. Sensitivity of 40 mV / Pa, noise 16 dB, 20 Hz 20 KHz - 0 + 1 dB steps CHARACTERISTICS supplied with each microphone.
Electronics without output transformer which is not the case of 4006. But we must supply the electronic microphone, not its polarization, with a voltage of 130 V continue to allow it to express its extraordinary dynamics, he released more than 100 V peak-peak around 150 dB SPL! I supplies 96 V 7 80 mA NiCd batteries in SERIES that give me enough voltage and without any noise to make them work without AC adapter or whatever it is, followed by a gain prampli x5 or x10, sufficient for recording the total number of concerts on a line between.

Microphone to rsultats extraordinary as its equivalent in the DPA 4004 1mV / Pa, Diameter of membrane 7 mm nickel foil of 2.5 microns thick, same principle but the bandwidth will 10 Hz to 40 kHz 0 dB + 1.5, and even thinner is perfectly peroit, whose sensitivity is sufficient prampli with a gain of x10 between a line for most even in classical concerts.

OVERALL OPINION

They are a good price but their technology is unique in the world market, the rsultats are up to their price, these are references. Measurement microphones suitable audio recording, even if the power supply 48 V fantme does not concern them, at least with these microphones we know the useful voltage applied to the electronic microphone, is 130 or 100 V, they tolrent up + 72 V, depending on what they were put, there comes a dynamic function. With the 48 V fantme, as there is no standardization of the current consumption of 1 10 mA, the 48V is 25, 30 or 35V, rarely more about the electronic microphone, or even acts on its polarization, APRS be happening in the normalization of Resistors SERIES 6.8 ohms in the prampli 48V. This is something that users often forget which can limit dynamics based on the current consumption of the microphone.