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Neumann
U 47 fet Switchable Studio
Microphone |
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Product Code:
U47FET
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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.
In order to ensure stable positioning, the microphone is swivel-mounted on an
integrated bracket. The bracket stand connector has 5/8"-27 internal thread,
with an adapter for 1/2" and 3/8" threads. The microphone cable can be secured
at the side of the stand connector, by using the knurled nut to fasten it in the
slot (for cable diameters of up to 5 mm). The microphone is available in classic
nickel. |
� 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, CCIR |
25 dB |
| Equivalent
noise level, A-weighted |
18 dB-A |
| Maximum SPL
for THD 0.5% |
137 dB |
| Maximum SPL
for THD 0.5% with preattenuation |
147 dB |
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Signal-to-noise ratio, CCIR (rel. 94 dB SPL) |
69 dB |
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Signal-to-noise ratio, A-weighted (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 |
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Diameter |
63 mm |
| Length |
160 mm |
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