The U 47 fet was first manufactured from 1972 to 1986, and since then has been firmly established in the range of microphones used by many well-known studios. In addition to serving as a soloist microphone, it has become legendary especially for the recording of bass-heavy instruments and for the direct miking of loud amps.
The U 47 fet Collectors Edition is a new edition of this classic, issued in the year 2014. For this, Neumann has resumed production of this classic mic, according to the original production documents and schematics. It is supplied with a high-quality wooden case with sophisticated special packaging, and an individual certificate with the serial number of the microphone.
In terms of technical design, the U 47 fet is a condenser microphone with a cardioid directional characteristic and fet 80 circuit technology. Among other things this technology, also used in the U 87, is characterized particularly by a wide dynamic range. The K 47 double large-diaphragm capsule was already employed in the U 47, the legendary tube-based predecessor of the U 47 fet. The K 47 provides a slight boost in the range above 2 kHz.
If required, a switchable low-cut filter raises the lower cutoff frequency electronically from 40 Hz to 140 Hz, thus suppressing undesirable low frequencies (such as impact sound and wind noise), or serving to compensate for the proximity effect. Switchable attenuation can reduce transmission levels by 10 dB, facilitating the processing of very high sound pressure levels of up to 147 dB. In addition, to prevent overloading of the connected preamp, the output signal can be reduced by 6 dB via a switch on the bottom of the microphone.
- Linear frequency response with a slight boost in the range between 2 and 5 kHz for more clarity to the human voice
- Useful amount of proximity effect, particularly good for thin voices
- bass roll-off at 40 Hz, switchable high-pass filter at 140 Hz
|Acoustical operating principle ||Pressure gradient transducer |
|Directional pattern ||Cardioid |
|Frequency range ||40 Hz ... 16 kHz |
|Sensitivity at 1 kHz into 1 kohm ||8 mV/Pa |
|Rated impedance ||150 ohms |
|Rated load impedance ||1 kohms |
|Equivalent noise level, CCIR1)
||25 dB |
|Equivalent noise level, A-weighted1)
||18 dB-A |
|Maximum SPL for THD 0.5%2)
||137 dB |
|Maximum SPL for THD 0.5% with preattenuation2)
||147 dB |
|Signal-to-noise ratio, CCIR1) (rel. 94 dB SPL) ||69 dB |
|Signal-to-noise ratio, A-weighted1) (rel. 94 dB SPL) ||76 dB |
|Maximum output voltage ||-3.3 dBu |
|Supply voltage (P48, IEC 61938) ||48 V ± 4 V |
|Current consumption (P48, IEC 61938) ||0.5 mA |
|Matching connector ||XLR3F |
|Weight ||710 g |
|Diameter ||63 mm |
|Length ||160 mm |