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Neumann M 149 Tube
Large Diaphragm Multipattern Condenser Tube Microphone in Satin Nickel Finish

OUR PART #:  M149-TUBE

Neumann's M 149 Tube is a variable dual-diaphragm microphone.
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Our Price: $5,049.95

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Neumann M 149 Tube
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Neumann's 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.  Thus, the M 149 Tube can 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.

Applications

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

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.

Acoustic Features

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.

Polar Patterns

The polar pattern switch selects one of nine directional patterns: omnidirectional, wide-angle-cardioid, cardioid, hypercardioid, figure-8, and one additional intermediate pattern between each major position.

Electrical Features

The circuit of the M 149 Tube microphone has been developed to exceed traditional designs.  Neumann has selected a modern tube (triode) and combined its exceptional transmission characteristics with the advantages of their proven transformerless output circuit.

The aim was to provide a more controlled environment for the audio signal on its path from the capsule to the output section.

The final stage is an integrated amplifier, especially designed for such applications.  It features very low distortion (THD < 0.002 % at Β± 10 V), very low self-noise, and high output current capability.

As a result, the tube circuit is completely decoupled from the microphone output and its characteristic response curve will be unaffected by very high signal levels or varying load conditions.

The lower output impedance and higher output current capability allow cable lengths up to 300 m (1000 feet) without any degradation of the audio signal.

The tube amplifier changes the high impedance of the capsule and adds 10 dB of gain to the audio signal, providing optimum operating specifications.  The wide dynamic range is impressive, as peak output can be Β±10 V, at 20 mA.

The ideal operating point of the tube is maintained throughout its entire life expectancy.  Plate current and filament voltage are constantly regulated.  A sensor circuit monitors and compensates for any voltage drop across the microphone cable.  The tube is heated up slowly through inverse current limiting to guarantee long life.  Optimum operating conditions are reached within a very short time.

Filter

A seven-position slide switch is located on the back of the microphone.  It selects a high-pass filter, advancing in half-octave steps between 20 Hz and 160 Hz (-3dB).  This filter is useful to suppress rumble from air-conditioning and in windy situations.

In addition, the filter provides an effective tool to control the audio signal when the microphone is used at close distance and therefore proximity effect alters the program material.

Delivery Range

The specifically designed N 149 A power supply unit feeds the M 149 Tube through an 8-core cable.  The output connector for the audio signal is a 3-pin XLR.  The output signal is balanced.

The microphone comes as a set in an attractive aluminium case, together with the 8-core microphone connecting cable, the N 149 A power supply with plug-in mains unit, the EA 170 full elastic microphone suspension and a dust cover.

Neumann M 149 Tube 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
  • 7-fold switchable low frequency roll-off

Neumann M 149 Tube Specifications:

  • Acoustical operating principle:  Pressure gradient transducer
  • Directional patterns:  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, CCIR*:  28/25/23 dB**
  • Equivalent noise level, A-weighted*:  16/13/11 dB-A**
  • Signal-to-noise ratio, CCIR* (rel. 94 dB SPL):  66/69/71 dB**
  • Signal-to-noise ratio, A-weighted* (rel. 94 dB SPL):  78/81/83dB**
    *According to IEC 60268-1; CCIR-weighting acccording to CCIR 468-3, quasi peak; A-weighting according to IEC 61672-1, RMS
    **Omnidirectional /cardioid / figure-8
  • Typical SPL (tube characteristic)***:  K < 0,5 %: 120 dB, K < 5%: 136 dB
    ***Measured as equivalent el. input signal
  • 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 8-pin DIN female, Power supply 3-pinXLR-F
  • Weight:  730 g
  • Diameter:  70 mm
  • Length:  201 mm
Power Supply for M 147/149/150 Tube Microphones
Neumann N 149 A Power Supply for M 147/149/150 Tube Microphones
Neumann's N 149 A power supply generates the necessary operating voltages for M 147 Tube, M 149 Tube or M150 Tube microphones.  Mains power is connected through a standard IEC 320 socket.  The microphone connects via an DIN-8 ...
1,099.95 1,379.00 20
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6.3" Diameter Table Stand for Microphones in Matte Black Finish
Neumann MF 4 6.3" Diameter Table Stand for Microphones in Matte Black Finish
Neumann's MF 4 is a table microphone stand with a gray cast-iron base.  The table stand has a matte black finish and rests on a non-skid rubber disk attached to the bottom.  A reversible stud and a reducer for 1/2" and 3/8" ...
339.95 429.00 21
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Elastic Suspension Mount for TLM 170, M 149 Microphones in Satin Nickel Finish
Neumann EA 170 Elastic Suspension Mount for TLM 170, M 149 Microphones in Satin Nickel Finish
Neumann's EA 170 elastic suspension mount is designed for use with their TLM 170 (R) and M 149 Tube microphones.  It has a swivel mount with a 5/8"-27 female thread, plus a thread adapter to connect to 1/2"- and 3/8" stands.
359.95
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10m Cable for M 149, M 150, M 147 Tube Microphones with 8-Pin DIN Connectors
Neumann KT 8 10m Cable for M 149, M 150, M 147 Tube Microphones with 8-Pin DIN Connectors
Neumann's KT 8 is a microphone cable that is designed for use with their M 147, M 149, and M 150 tube microphones.  It has double twist (double helix) braiding for its shield.Diameter: 5 mmLength: 10 mConnectors: 8-pin DIN
279.95 349.00 20
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4.3" Diameter Table Microphone Stand in Matte Black Finish
Neumann MF 3 4.3" Diameter Table Microphone Stand in Matte Black Finish
Neumann's MF 3 is a table stand with an iron base.  The bottom is fitted with a non-slip rubber disk.  The stand comes with a reversible stud and an adapter for 1/2" and 3/8" threads.Weight: 3.5 lbs ...
239.95 309.00 22
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Auditorium Hanger for Swivel Mounts & Shockmounts in Satin Nickel Finish
Neumann MNV 87 Auditorium Hanger for Swivel Mounts & Shockmounts in Satin Nickel Finish
Neumann's MNV 87 auditorium hanger consists of a cable suspension and a rotating 1/2" threaded stud, to connect to e. g. swivel mounts. The stud is screwed into the threaded coupling of the swivel mount.  Then the microphone can be ...
189.95 239.00 21
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40 mm Black Microphone Stand Extension
Neumann STV 4 40 mm Black Microphone Stand Extension
Neumann's STV 4 stand extension screws in between microphone stands (Neumann's MF 4 & MF 5, for example) and swivel mounts, like the, SG 21 bk.Length: 40 mmDiameter: 19 mm
99.95 129.00 23
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10M Microphone Cable
Neumann IC 3 mt 10M Microphone Cable
Neumann's IC 3 mt is a 10M microphone cable with double twist (double helix) braiding as shield. Diameter: 5 mm Length: 10 m Connectors: 3-pin XLRs Finish: Matte blackEven if very long Neumann cables are used, the electroacoustic ...
59.95 75.00 20
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