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Neumann KM131 Omni (NearField) Miniature Microphone (AK31/KM100)

£849.00 £707.50 (ex. vat)

Neumann KM131

  • Neumann KM131

Neumann KM131 Omni (NearField) Miniature Microphone (AK31/KM100)

The Neumann KM131 set includes a KM 100 (output stage), an AK 31 Omni free-field equalized pressure transducer, a WNS 100 series Windscreen, an SG 21/17 mt Stand mount swivel and a Wooden box. The AK 31 has a flat frequency response up to 20 kHz (in the free field). In the diffuse sound field this microphone has a high frequency roll-off above 5 kHz. Often used for close miking of instruments when there is no need to attenuate extraneous noise, and in a balanced acoustic environment to record acoustic guitar, wind instruments, strings, percussion, and drums

The variable condenser miniature microphone system consists of several active microphone capsules with different directional characteristics, an output stage, and numerous accessories. Currently there are seven active capsules available: omni diffuse- field equalized, omni free-field equalized, cardioid, wide-angle cardioid, cardioid with bass roll-off, hypercardioid, and figure-8. Through the modular construction of mic capsules and the output stage it is very easy to adapt the system to a wide range of applications. The mic becomes nearly invisible during work with cameras (film, video), on stage, or suspended from the ceiling in a concert hall. An active capsule can also be screwed directly onto the output stage. The result is a compact miniature microphone. The microphones are only 92 or 110 mm resp. long and 22 mm in diameter. They consist of the condenser capsule and the output stage. Both parts can be unscrewed from each other. The capsules attach to cables, capsule extensions, swivel mounts, table stands, goose-necks, stereo mounts, and hangers. Therefore, it is very easy to adapt the system to a wide range of applications. The active capsule itself is only 35 or 47 mm resp. long. The KM 100 output stage and the active microphone capsule may be separated by up to 50 m of interconnecting cable. These cables are 3 mm in diameter, and therefore very inconspicuous.

Neumann KM131 Features

  • Active capsules, detachable up to 50 m from the output stage
  • Great variability through capsule extensions and goosenecks
  • Switchable 10 dB pre-attenuation enables sound pressure levels up to 150 dB without being overloaded.
  • Set includes windshield and two different clamps
  • Transformerless circuitry
  • Extensive accessories
  • The KM 100 output stage has a 3-pin XLR connector

Neumann KM131 Specifications

  • Acoustical operating principle: Pressure transducer
  • Directional pattern: Omni free field eq
  • Frequency range: 20 Hz - 20 kHz
  • Sensitivity at 1 kHz into 1 kohm: 12 mV/Pa
  • Rated impedance: 50 ohms
  • Rated load impedance: 1000 ohms
  • Equivalent SPL CCIR 468-3: 25 dB
  • Equivalent SPL DIN/IEC 651: 16 dB-A
  • S/N ratio CCIR 468-3: 67 dB
  • S/N ratio DIN/IEC 651: 78 dB
  • Maximum SPL for THD 0.5%: 140 dB
  • Maximum SPL for THD 0.5% with preattanuation: 150 dB
  • Maximum output voltage: 10 dBu
  • Dyn. range of the mic. amplifier DIN/IEC 651: 124 dB
  • Supply voltage: 48 V ± 4 V
  • Current consumption: 2 mA
  • Matching connector: XLR 3F
  • Weight: 80 g
  • Diameter: 22 mm
  • Length: 92 mm


Manufacturer Neumann
Model KM131
GTIN 0615104070615
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