NEUMANN M149 Switchable Tube Microphone

The M 149 Tube* is a variable dual-diaphragm tube 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.

Key Features:

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

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Product Code: 200000726

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.

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/Pa1)

Rated impedance - 50 ohms

Rated load impedance - 1 kohms

Equivalent noise level, CCIR2) - 28/25/23 dB1)

Equivalent noise level, A-weighted2) - 16/13/11 dB-A1)0

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

Maximum output voltage - 18 dBu

Dynamic range of the microphone amplifier (A-weighted) for

Powering - Power supply N 149 A

Matching connectors - Microphone DIN8F, Power supply XLR3F

Weigh - 730 g

Diameter - 70 mm

Length - 201 mm

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

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