Neumann M 149 Variable Dual Diaphragm Condenser Microphone



The Neumann M149 Tube is a variable dual-diaphragm microphone.

The Neumann M149 Tube features a K49 capsule – well-known from the legendary U47 and M49 microphones – which is followed by a tube functioning as an impedance converter. In contrast to earlier concepts – utilizing a transformer – the tube is complemented with a transformerless output circuit design.

The Neumann M149 Tube can thus feed long microphone cables without any coloration. Two slide switches are located below the large, acoustically very open headgrille. The switch at the front allows selection one of nine directional patterns. The slide switch at the rear operates a seven-step high pass filter. It allows a very fine adjustment of the cut-off.


  • A warm and yet transparent sound gives volume and presence to a vocalist
  • A wide range of adjustments provide the most subtle differentiation of sound, especially in the range of proximity effect
  • A widely used microphone for broadcasting, dubbing, and voice-over
  • Excellent Spot mic for close miking of solo instruments, especially strings, wind instruments, and piano
  • N 149 A Power supply incl. power cord, KT 8 Connecting cable, EA 170 Elastic suspension, Aluminium case and Dust cover included
  • Switchable tube microphone
  • Transformerless circuitry
  • High output level
  • Pressure gradient transducer with the K49 capsule
  • Acoustically very open wire mesh cage
  • Nine directional characteristics: omni, wide angle cardioid, cardioid, hypercardioid, figure 8, and one intermediate position each
  • 7-fold switchable low frequency roll-off
  • Acoustical operating principle: Pressure gradient transducer
  • Directional pattern: Omnidirectional, wide angle cardioid, cardioid, hypercardioid, figure-8 plus one intermediate position each
  • Frequency range: 20 Hz – 20 kHz
  • Sensitivity at 1 kHz into 1 kohm: 34/47/62* mV/ Pa
  • Rated impedance: 50 ohms
  • Rated load impedance: 1000 ohms
  • Equivalent SPL CCIR 468-3: 28/25/23* dB
  • Equivalent SPL DIN/IEC 651: 16/13/ 11* dB-A
  • S/N ratio CCIR 468-3: 66/69/71* dB
  • S/N ratio DIN/IEC 651: 78/81/83* dB
  • Typical SPL (tube characteristic): for K < 0,5 %…120dB; for K < 5 %…136dB
  • Maximum output voltage: 18 dBu
  • Dynamic range of the microphone amplifier cardioid DIN/ IEC 651 for < 0,5% THD (for < 5% THD): 101 (121) dB
  • Powering: Power supply N 149
  • Microphone connectors: DIN8F
  • Power supply connectors: XLR3F
  • Weight: 730g
  • Diameter: 70mm
  • Length: 201mm

* Omnidirectional / cardioid / figure-8

Additional information

Weight 10 kg


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