Microtech Gefell M900 large diaphragm hand-held condenser microphone
The M 900 (Cardioid) large diaphragm hand-held condenser microphone was developed for instrumental and vocal soloist use in the professional market, it has a well balanced frequency response in the free-field as well as in the diffuse-field.
The MV200 impedance converter in the M 900, converts the large capacitive impedance of the capsule down to about 150Ω. The electronics also contain a switching power supply to generate the polarisation voltage for the capsule, which is independent of the phantom voltage. This allows the mic to have a higher polarisation voltage than the phantom voltage (c. 80V). This higher polarisation voltage results in higher sensitivity and lower self noise. For compactness and mechanical robustness, all components of the MV200 impedance converters are zero-clearance, surface mounted (SMD) on the board.
The M 900 can also be used as a radio microphone by using a plug-on transmitter that can supply 48V phantom power. There are quite a few of these on the market, EG: Audio Limited, Sennheiser, Shure, etc. ‚ these partner the M 900 and M 910 very well.
Specifications
- Polar Patterns: cardioid
- Acoustical Operating Principle: Pressure gradient transducer
- Frequency Range: 40-18000Hz
- Sensitivty at 1kHz: 17mV/Pa
- Switch position “reduced bass roll-off” at 90Hz: -10dB
- Output impedance: 150 ohms
- Noise Level: CCIR 468-4 – 21dB / DIN EN 60268-4 – 13dB-A
- Signal-to-noise ratio: CCIR Weighted – 73dB / DIN EN 60268-4 – 81dB
- Max. SPL for 0.5% THD: 131dB
- Max. SPL for 0.5% THD with 10dB preattenuation: 143dB
- Dynamic range 120dB
- Current consumption 3mA
- Output connector 3-pin XLR connector goldplated contacts
- Weight: 229g
- Dimensions (L x √ò): 218mm x 47/28mm
- Finish: Nextel