Neumann M 149 Tube Switchable Tube Microphone
Part # 008399
Model # M 149 Tube
The Neumann M 149 Tube is a variable dual-diaphragm microphone with nine polar patterns to choose from, making this microphone an ideal choice for a wide range of recording situations.
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Description

Details

The M 149 Tube is a variable dual-diaphragm microphone. The K 49 capsule – well-known from the legendary U 47 and M 49 microphones – 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 M 149 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 frequency.

There are nine polar patterns to choose from, making this microphone an ideal choice for a wide range of recording situations.

As its ancestors, the M 149 Tube is a superb vocalist microphone, not only because of the capsule, but also due to its modern circuitry, characterized by extremely low noise level.

The M 149 Tube is addressed from the front, marked with the Neumann logo. Also on the front is the switch for the selection of the polar patterns.

The capsule is mounted elastically inside the headgrille to eliminate structure borne noise. The surface below the capsule is shaped like a cone to disperse any reflected sound from the acoustic upper half space. This avoids any interference with the primary sound arriving at the capsule directly.

A large headgrille surrounds the capsule. It is acoustically very open and therefore increases the sonic realism.

Features

Features

  • Switchable tube microphone.
  • Transformerless circuitry.
  • High output level.
  • Pressure gradient transducer with the M 49 capsule.
  • Acoustically very open wire mesh cage.
  • Nine directional characteristics: omni, wide angle cardioid, cardioid, hypercardioid, figure 8, and one intermediate position each.
  • 7fold switchable low frequency roll-off.
Specification
Acoustical operating principlePressure gradient transducer
Directional patternOmnidirectional, wide angle cardioid, cardioid, hypercardioid, one intermediate position each
Frequency range20 Hz ... 20 kHz
Sensitivity at 1 kHz into 1 kohm34/47/62 mV/Pa1)
Rated impedance50 ohms
Rated load impedance1 kohms
Equivalent noise level, CCIR2)28/25/23 dB1)
Equivalent noise level, A-weighted2)16/13/11 dB-A1)
Signal-to-noise ratio, CCIR2) (rel. 94 dB SPL)66/69/71 dB1)
Signal-to-noise ratio, A-weighted2) (rel. 94 dB SPL)78/81/83 dB1)
Typical SPL (tube characteristic)3)K < 0,5 %: 120 dB, K < 5 %: 136 dB
Maximum output voltage18 dBu
Dynamic range of the microphone amplifier (A-weighted) for < 0,5% THD (for < 5% THD)101 (121) dB
PoweringPower supply N 149 A
Matching connectorsMicrophone DIN8F, Power supply XLR3F
Dimensions (Dia. x Length)2.76" (70 mm) x 7.91" (201 mm)
Weight1.60 lbs (730 g)
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