M 150 Tube
The M 150 Tube is a small-diaphragm tube condenser microphone with a titanium capsule mounted in a 40 mm sphere, giving an omnidirectional pattern that narrows at high frequencies. It is a modern take on the Neumann M 50 and is aimed at orchestral recording and DECCA Tree setups.
- 12 mm titanium capsule in a 40 mm sphere
- Omni pattern that becomes directional at high frequencies
- Transformerless tube output stage
- Self-noise 15 dB-A, S/N 79 dB (A-weighted)
- -10 dB pad and 40 Hz / 16 Hz low-cut switch
- Supplied with N 149 A power supply, shock mount and case
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The M 150 Tube uses a 12 mm pressure-transducer capsule with a titanium diaphragm and titanium backplate spaced 10 microns apart. The capsule sits flush in a 40 mm sphere, which makes the omnidirectional pattern progressively more directional at higher frequencies. The headgrille copies the shape of the original M 50, and sensitivity rises gradually above 1 kHz.
The signal is amplified by a circuit built around a subminiature triode, with a transformerless output stage instead of the output transformer of the 1950s original. Self-noise is 15 dB-A, and cable runs of up to 300 m are possible without transmission loss. A -10 dB switch reduces output level for preamps with limited headroom. A second switch engages a 40 Hz low-cut filter; in the LIN position the filter moves to 16 Hz instead of switching off.
The microphone connects to the supplied N 149 A power supply through a DIN 8 connector, and the power supply has an XLR 3 output. It suits classical and film-score sessions, particularly DECCA Tree stereo and surround recording.
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Specifiche
- Marca
- Neumann
- Modello
- M 150 Tube
- Categoria
- Studio › Microfoni
Acoustics
- Operating principle
- Pressure transducer
- Directional pattern
- Omnidirectional
- Frequency range
- 20 Hz ... 20 kHz
- Sensitivity at 1 kHz into 1 kohm
- 20 mV/Pa
- Equivalent noise level, A-weighted
- 15 dB-A
- Equivalent noise level, CCIR
- 28 dB
- Signal-to-noise ratio, A-weighted (re. 94 dB SPL)
- 79 dB
- Signal-to-noise ratio, CCIR (re. 94 dB SPL)
- 66 dB
- Typical SPL for K<0.5%
- 114 dB
- Typical SPL for K<5%
- 134 dB
Electrical
- Rated impedance
- 50 ohms
- Rated load impedance
- 1 kohms
- Maximum output voltage
- 8 dBu
- Amplifier dynamic range, THD < 0.5%
- 99 dB
- Amplifier dynamic range, THD < 5%
- 119 dB
- Pad
- -10 dB switch
- Low-cut filter
- 40 Hz (16 Hz in LIN position)
Connectivity
- Power supply
- N 149 A
- Matching connector
- Microphone: DIN 8 F, Power Supply: XLR 3 F
- Maximum cable length
- 300 m
Physical
- Weight
- 800 g
- Diameter
- 78 mm
- Length
- 165 mm
- Color
- Nickel
In the box
- Included
- M 150 Tube microphone, N 149 A power supply, EA 170 shock mount, KT 8 connecting cable, aluminium case
- Variants
- 230 V EU, 230 V UK, 117 V US