M147 TUBE

Vacuum Tube Large Diaphragm Condenser Microphone

Overview
The M 147 Tube Microphone from Neumann is a vacuum tube large diaphragm condenser microphone with a cardioid polar pattern. The pressure gradient, dual diaphragm capsule is the K 47/49, inherited from the legendary U 47 and M 49 microphones. Following the tube is a transformerless output circuit providing low self-noise and high output gain without adding color to the signal. The  M 147 Tube delivers high output levels, allowing the microphone to feed cables up to 984.3' in length without signal degradation. The side address capsule features a cardioid polar pattern, which is effective in minimizing ambiance and noise coming from the off-axis sections of the microphone. The capsule features a flat frequency response to the upper mid-range, and a boost of up to 3 dB above 2 kHz. The M 147 Tube is a suitable microphone for recording vocals and general instruments such as strings, piano and wind instruments.

Features

Tube Circuitry

The M 147 Tube features a combination of solid state and vacuum tube circuitry. The Vacuum tube design provides a type of warmth and definition not often found in solid-state circuitry.

K 47/49 Dual Diaphragm

Featuring the K 47/49 dual diaphragm, adapted from the legendary M 49 and U 47 Tube microphones. The M 147 maintains the level of sonic character at a modest price point.

Quality Output Circuitry

The Transformerless output design provides a low noise floor and output gain high enough to feed cables up to 984.3' in length without degradation in signal.

Cardioid Polar Pattern

The cardioid polar pattern effectively minimizes off-axis noise caused by room ambiance, instruments, monitors etc. The pattern offers a more generous pick up area with lower range frequencies.

N 149 A Power Supply

The Neumann N 149 A power supply effectively powers the microphone and is compatible with both the M 149 and 147 microphones.

Specifications          

Analog Performance

Operating Principle        Pressure Gradient

Transducer        Condenser

Tube     Yes

Polar Pattern     Cardioid

Frequency Range          20 Hz to 20 kHz

Signal to Noise Ratio     70 dB CCIR

82 dB A-Weighted

Equivalent Noise Level  24 dB CCIR

12 dB A-Weighted

Maximum SPL   114 dB SPL

134 dB SPL

THD      0.5%

Impedance       50 Ohms

Load Impedance           1000 Ohms

Sensitivity         20 mV/Pa at 1 kHz into 1 kOhms

General

Output Connectors        1 x 3-Pin XLR

Length  5.59" / 142 mm

Diameter           2.24" / 57 mm

Weight  16.23 oz / 460 g

Packaging Info

Package Weight            11.65 lb

Box Dimensions (LxWxH)          16 x 14.1 x 6"

What’s In The Box

- Neumann M147 Tube Microphone

- Swivel Stand Mount

- Universal Power Supply

- Cable

- Aluminum Case