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Neumann M-147 Vaccuum Tube Cardioid Condenser 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. Additionally, 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. 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 aluminium 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.
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Specifications Recommended Applications
- Vocalist mic: its warm and yet transparent sound gives volume and presence
- Announcer's mic for broadcasting dubbing, and voice-over
- Spot mic for close miking of solo instruments, especially strings, wind instruments, piano
Technical Data
- 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: 1 kohms
- Equivalent noise level, CCIR1): 24 dB
- Equivalent noise level, A-weighted1): 12 dB-A
- Signal-to-noise ratio, CCIR1) (rel. 94 dB SPL): 70 dB
- Signal-to-noise ratio, A-weighted1) (rel. 94 dB SPL): 82 dB
- Typical SPL (tube characteristic)2): 114 dB for THD < 0.5 %, 134 dB for THD < 5 %
- Maximum output voltage: 8 dBu
- Dynamic range of the microphone amplifier (A-weighted): 102 dB for THD < 0.5 %, 122 dB for THD < 5 %
- Powering: Power supply N 149 A
- Matching connector: Microphone: DIN 8F, Power Supply: XLR3F Weight: 460 g Diameter: 57 mm Length: 142 mm
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