Neumann M149 Tube (230 Volt, Euro)

Neumann M 149 Tube (230 Volt, Euro)

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.

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

Technical Specifications:
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)
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 voltage     18 dBu
Dynamic range of the microphone amplifier (A-weighted) for < 0,5% THD (for < 5% THD)     101 (121) dB
Powering     Power supply N 149 A
Matching connectors     Microphone DIN8F, Power supply XLR3F
Weight     730 g
Diameter     70 mm
Length     201 mm