Miniature Microphone

KM 131

The KM 131 was part of the KM 100 series, Neumann’s first modular small diaphragm microphone system. The KM 131 combines the KM 100 output stage with the free-field equalized omni capsule AK 31.

  • Miniature microphones with 7 exchangeable capsules
  • Transformerless circuitry
  • Extensive accessories
KM 131
KM 131
Diameter 22 mm
Length 92 mm
Weight 80 g
Current consumption (P48, IEC 61938) 2 mA
Directional Pattern Omni free field eq
Frequency Range 20 Hz ... 20 kHz
Matching connector XLR 3 F
Rated Impedance 50 Ohms
Supply voltage (P48, IEC 61938) 48 V ± 4 V
Acoustical operating principle Pressure transducer
Maximum output voltage 10 dBu
Rated load impedance 1000 Ohms
Equivalent noise level, CCIR 25 dB
Maximum SPL for THD 0.5% 140 dB
Equivalent noise level, A-weighted 16 dB-A
Sensitivity at 1 kHz into 1 kohm 12 mv/Pa
Maximum SPL for THD 0.5% with preattenuation 150 dB
Signal-to-noise ratio, CCIR (re. 94 dB SPL) 69 dB
Signal-to-noise ratio, A-weighted (re. 94 dB SPL) 78 dB
Signal-to-noise ratio, CCIR (re. 94 dB SPL) 69 dB

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