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Neumann KM 183 Miniature Microphone |
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Product Code: KM183
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The "Series
180" consists of three compact miniature microphones with patterns that satisfy
the demands of all common studio applications.
Because of its optimized mechanical construction and conscious omission of
modularity, which is unnecessary in many cases, the "Series 180" is predestined
for economy-minded production and home recording studios.
The KM 183 omnidirectional and KM 185 hypercardioid microphones are based on the
tremendously successful KM 184 cardioid microphone, which has become a standard
within the global studio community in just a very short time. All "Series 180"
microphones are available with either matte black or nickel finish.
Applications
Their slender shapes and the transmission characteristics described below make
the "Series 180" especially suitable for a very wide range of tasks in the radio
and television sector.
Acoustic features
The KM 183 and KM 184 microphones are the successors of the well proven KM 83
and KM 84, which have been used since the seventies worldwide with great
success. The KM 185 rounds out the series with a hypercardioid microphone.
The KM 183 is a pressure transducer with a boost of approximately 7 dB at 10 kHz
in the free field. In the diffuse sound field it has a flat frequency response.
The pressure gradient transducers KM 184 and KM 185 feature very smooth
frequency responses not only for the 0� axis, but also for lateral (off-axis)
sound incidence. In typical usage, there is no coloration of sound over a wide
pickup angle.
Although the KM 184 has the same capsule as the KM 84, the microphone differs
slightly on the 0� frequency response: The KM 184 has a gentle rise at about 9
kHz, a characteristic that was introduced very successfully with the KM 140. The
result is a tonal balance that is fresher and livelier when compared to the KM
84 with its flat frequency response in that band.
This difference was achieved with just a slight change of the capsule�s rear
opening, and is not due to resonances.
The KM 185 with its hypercardioid characteristic features attenuation of sound
incidence from the side or rear of about 10 dB, with minimum sensitivity at an
angle of 120�.
Electrical features
The "Series 180" microphones have the same transformerless circuitry as is used
in the KM 100 system, resulting in excellent technical specifications:
Compared to the KM 84 the dynamic range of the KM 184 increased by 24 dB mainly
through the reduction of self-noise level to only 22 dB (CCIR) and an increased
sound pressure handlingcapability of up to 138 dB.
The microphones operate without any problems, even if the input of following
equipment happens to be unbalanced, for example as in some DAT recorders.
The output of the "Series 180", as in all Neumann microphones, is balanced and
phantom (48V) powered.
Economy
The "Series 180" is a good choice for all users who look for a high-quality
miniature microphone, but do not need the complex, modular KM 100 system, which
continues to be part of the Neumann product range.
The mechanical construction was simplified, for example, capsule and output
stage cannot be separated from each other. For this reason the "Series 180" is
an economical alternative without giving up the electroacoustic features the
users expect from Neumann microphones. |
� Three
different miniature microphones for all typical studio applications
� Successor of the worldwide successful KM 83/84
� Transformerless circuitry |
| Acoustical operating
principle |
Pressure transducer |
| Directional pattern |
omnidirectional |
| Frequency range |
20 Hz ... 20 kHz |
| Sensitivity at 1 kHz into 1
kohm |
12 mV/Pa |
| Rated impedance |
50 ohms |
| Rated load impedance |
1 kohms |
| Equivalent noise level,
CCIR) |
24 dB |
| Equivalent noise level,
A-weighted) |
13 dB-A |
| Signal-to-noise ratio, CCIR) (rel. 94 dB
SPL) |
70 dB |
| Signal-to-noise ratio, A-weighted) (rel. 94
dB SPL) |
81 dB |
| Maximum SPL for THD 0.5%2 |
140 dB |
| Maximum output voltage |
10 dBu |
| Supply voltage (P48, IEC
61938) |
48 V ± 4 V |
| Current consumption (P48, IEC
61938) |
3.2 mA |
| Matching connectors |
XLR 3F |
| Weight |
approx. 80 g |
| Diameter |
22 mm |
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Length |
107 mm |
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