Microtech Gefell M 102 Condenser Microphone 1″ Nickel Capsule

Microtech Gefell M 102 Measurement Microphone Dark Bronze

Microphone preamplifier MV 400 X

The M 102 combines high quality measurement microphone capsule technology with a nickel metal membrane and a modular pre-amplifier. The use of a certified measurement capsule combined with a 48 V phantom powered pre-amplifier reaches a constant magnitude and phase response and transmission properties that are long-term stable. A sound calibrator like the KAL 4010 can be used for optimal level adjustment if required.

The sound transducer is an externally polarised capsule with a diameter of 23.8 mm with an extremely thin nickel metal diaphragm. This nickel diaphragm is “grown in place” on the metal structure of the microphone capsule making it one uniform piece. The diaphragm structure is the same in all directions and is a pure sampler of the sound pressure wave without the distortions that can happen with other construction methods. The pressure transducer is omni-directional and without any proximity effect. Because of the free-field equalisation, the M 102 has a constant frequency response from below 20 Hz up to 20 kHz. The static pressure equalisation between the capsule interior and the atmosphere is obtained via a tiny vent into the preamplifier.

The transformerless circuit design of the electronic impedance converter with symmetrical output facilitates an output capability for sound pressures from 11 dB(A) up to 136 dB with a maximum of 0.5% THD (total harmonic distortion). The microphone is powered via an external 48 V phantom supply according to IEC 61938 and internally generates the 200 V polarisation voltage for the capsule.

Features:

• Condenser microphone
• Omni-directional
• Measurement quality capsule
• Nickel diaphragm
• Transistor pre-amplifier
• Phantom powering P48

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• Polar pattern - Omni
• Acoustic operating principle - Pressure transducer
• Frequency range - 20 Hz to 20,000 Hz
• Sensitivity at 1 kHz - 50 mV/Pa
• Output impedance - 100 Ohm
• Dynamic range - 125 dB
• Current consumption - 5.5 mA
• Output connector - XLR3M
• Weight - 210 g
• Length - 180 mm
• Surface - Dark bronze
• SPL for THD 0,5 % - 136 dB
• Noise level
• IEC CCIR 468-4 - 23 dB
• DIN EN 60268-4 - 11 dB-A
• Signal-to-noise ratio
• A-weighted - 83 dB
• Max. output level
• RL = 1 kOhm - 18 dBu
• RL = 10 kOhm - 19 dBu