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Miniature Microphone

KM 143

The KM 143 was part of the KM 100 series, Neumann’s first modular small diaphragm microphone system. The KM 143 combines the KM 100 output stage with the wide cardioid capsule AK 43.

  • Miniature microphones with 7 exchangeable capsules
  • Transformerless circuitry
  • Extensive accessories
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KM 143
Diameter 22 mm
Length 92 mm
Weight 80 g
Current consumption (P48, IEC 61938) 2 mA
Directional Pattern Cardioid wide angle
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 gradient transducer
Maximum output voltage 10 dBu
Rated load impedance 1000 Ohms
Equivalent noise level, CCIR 25 dB
Maximum SPL for THD 0.5% 138 dB
Equivalent noise level, A-weighted 16 dB-A
Sensitivity at 1 kHz into 1 kohm 15 mv/Pa
Maximum SPL for THD 0.5% with preattenuation 148 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
// Diagrams

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