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Neumann M147 Tube Microphone

Dual diaphragm capsule. Cardioid. Pictured with optional EA1 shockmount. (92) Read 1 review for this product | Rate and review this product
Ships to: Can ship to United States
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Neumann M147 Microphone

The M 147 Tube is a vacuum tube condenser microphone with cardioid characteristic. At the heart of this microphone is the K 47 dual diaphragm capsule, inherited from this model's now legendary predecessors, the U 47 and the M 49.

Following the capsule is a tube that functions as an impedance converter. The next stage is an efficient, transformerless output circuit that guarantees an extremely low self-noise level.

Note: This innovative combination of current tube technology with the most advanced solid-state circuitry was decisive in awarding the 1997 TEC Award to the related M 149 Tube mic.

The M 147 Tube can feed extremely long microphone cables without affecting the quality of the audio signal. Like all Neumann tube microphones, the M 147 Tube comes with an elegant satin nickel finish.

The microphone is delivered as a complete set in a high-quality aluminum case. Included with the microphone are a microphone cable, a metal swivel mount for a mic stand, and a compact universal power supply for standard mains sockets. Neumann's modern manufacturing methods make it possible to offer this complete set at a very attractive price.

Features
- Universal tube microphone

- Pressure gradient transducer with the large diaphragm capsule from the legendary U 47 and M 49

- Transformerless circuitry

- Low self noise level

- Comes with swivel stand mount made of metal, universal power supply, and cable in an attractive aluminum case

Applications
The famous capsule, together with complimenting tube characteristics, makes the M 147 Tube especially well suited as a vocal mic. In addition, it is a superb spot mic for all types of musical instruments. The extremely low self-noise of its tube circuitry makes the mic perfectly suited for use in modern recording chains, analog and digital.

Acoustic
The M 147 Tube is addressed from the side, where the microphone body has the diamond-shaped Neumann company logo. The black color identifies tube microphones. The capsule is equivalent to the one used in the U 47, and is the deciding factor in determining the sound characteristic. It has a flat frequency response to the upper midrange, and a boost of up to 3 dB above 2 kHz. The head grille design is a smaller version of the U 47. It protects the capsule effectively against popping and wind noise.

Polar
The M147 Tube has a cardioid characteristic, leaning more toward super-cardioid due to its distinctive capsule design. At higher frequencies the pattern becomes more directional. This is very similar to the model after which this new tube microphone was patterned, the U 47 and the successor, the U 47 fet.

Electrical
When compared to other microphones, the impedance converter used in the M 147 Tube is distinguished by its extremely low self-noise level of only 14 dB-A / 25 dB CCIR weighted.

Similar to the recently introduced M 149 Tube, the new M 147 Tube combines a specifically selected vacuum tube (triode) with modern circuitry. This technique takes full advantage of the special transfer characteristics of the tube and passes the processed audio signal of the capsule to the microphone output, without any coloration or unwanted side effects.

The tube amplifies the capsule's signal by approximately 10 dB, thus preventing any possible influences from subsequent electronics. The M 147 Tube delivers a high output voltage, and therefore can feed microphone cables up to 300 m length without signal degradation.

The ideal operating conditions (anode current, heater voltage) of the tube are maintained throughout its life expectancy. A sensor lead detects any voltage drop that occurs through the microphone cable and compensates for it in the N 149 A power supply. The tube warms up gradually using inverse current limiting to guarantee long life.

Filter
The electronic circuitry of the M 147 Tube mic has a flat frequency response from 20 Hz to well above 20 kHz. Only the attributes of the capsule determine the typical sound characteristics of the microphone.

Operational Stability
Both the capsule and the entire circuitry are shock mounted to prevent any structure-borne noise. Because of its wide operating range, the M 147 Tube can reproduce extremely low frequency signals without distortion.

This implies that the microphone may also be sensitive to unwanted LF interference by structure-borne noise, or wind noise. To avoid possible signal degradation, Neumann offers the EA 1 elastic suspension and the WS 87 windscreen as accessories. During close miking of vocals Neumann recommends using the PS 10 or PS 20 pop screen.

N 149 A Power Supply
The N 149 A universal power supply works with all mains AC voltages from 100 V to 240 V, 50 or 60 Hz. Mains power is connected through a standard IEC 320 mains socket. The only difference between the three available versions of the M 147 Tube set is the power cord supplied.

Note: The N 149 and N 149 V power supplies that come with the M 149 Tube are fully compatible with the M 147 Tube microphone.

Package Contents
The M 147 Tube receives its operating power through the 8-conductor KT 8 microphone cable from the N 149 A universal power supply. The microphone's audio output signal is available through a standard 3-pin XLR connector at the power supply. The microphone comes as a complete set, together with the KT 8 microphone cable, the N 149 A power supply, the SG 1 swivel mount stand adapter, and a cloth dust protector. The set is packaged in an attractive aluminum case suitable for carrying and storage.

zZounds is an authorized dealer of Neumann products.
Acoustical Operating Principle: Pressure gradient transducer

Directional Pattern: Cardioid

Frequency Range: 20 Hz-20 kHz

Sensitivity at 1 kHz into 1 kohm: 20 mV/Pa

Rated impedance: 50 ohms

Rated load impedance: 1000 ohms

Equivalent SPL CCIR 468-3: 24 dB

Equivalent SPL DIN/IEC 651: 12 dB-A

S/N ratio CCIR 468-3: 70 dB

S/N ratio DIN/IEC 651: 82 dB

Maximum SPL:
114 dB for THD < 0.5 %
134 dB for THD < 5 %

Maximum output voltage: 8 dBu

Dyn. range of the mic. amplifier DIN/IEC 651:
102 dB for THD < 0.5 %
122 dB for THD < 5 %

Supply voltage: Power supply N 149 A

Matching connector: Microphone: DIN 8F

Power Supply: XLR 3F

Weight: approx. 460 g

Diameter: 57 mm

Length: 142 mm
If you have additional warranty questions, please contact the manufacturer at 860-434-9190
Customer Reviews
5 out of 5 (92 ratings) Rate and Review This Product
zZounds has verified that this customer bought this product from us. "All good things come in Neumann packages!"
Sound: Cant say enough good things about this mic, Sounds great , I use it all the time on everything from vocals to guitar and anything in between. Feature: Comes with everything you need right out of the box, no having to buy the expensive shock mount as its already in the box!
Style of Music: All
8 of 11 people (72.73%) found this review helpful. Did you?
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