Neumann KM 183 A NX Modular Omnidirectional Small Diaphragm Condenser Microphone, Nextel

The combination of the capsule KK 183 with the output stage KM A is only one of the numerous options within the Neumann KM A/D small diaphragm microphone system.

The Neumann system KM A/D is a modular microphone system for even the most demanding applications. Eight different small diaphragm capsules (KK 120 KK 185) may be combined with either an analog output stage (KM A) or a digital AES 42 output stage (KM D). All components are available in nickel or Nextel black (nx). A comprehensive range of accessories ensures adaptability to the most diverse fields of application.

Compared to its predecessor, the Series KM 100, the new system KM A/D works with passive capsules, which are considerably smaller while retaining the proven acoustic design.
New and advanced electronic components allow for many electroacoustic and operational advantages, such as reduced self-noise, an extended dynamic range, and very high electromagnetic immunity.

The modular concept permits the capsule to be detached and used at a distance from the output stage of up to 100 m (330 ft), connected via a special cable. For usual applications, the LC 4 cable is available with a length of 5 or 10 meters (ca. 16 or 33 ft.). Alternatively, capsule extensions of various lengths, swivel capsule joints, and swivel stand mounts, etc. may be used for a flexible microphone setup. The analog and digital output stages have identical dimensions (diameter: 22 mm, length: 93 mm). All accessory parts may thus be combined with both output stages.

Technical Specifications

Acoustical operating principle
Pressure transducer
Directional Pattern
Omni diffuse-field equalized
Frequency Range
20 Hz...20 kHz
Sensitivity at 1 kHz into 1 kohm
12 mV/Pa
Rated Impedance
50 ohms
Rated load impedance
1000 ohms
Equivalent noise level, CCIR 1
24 dB
Equivalent noise level, A-weighted 2
13 dB-A
Maximum SPL for THD 0.5% 3
140 dB
Maximum SPL for THD 0.5% with preattenuation 4
150 dB
Signal-to-noise ratio, CCIR (re. 94 dB SPL) 5
69 dB
Signal-to-noise ratio, A-weighted (re. 94 dB SPL) 6
81 dB
Supply voltage (P48, IEC 61938)
48 V
Current consumption (P48, IEC 61938)
max. 3.5 mA
Matching connector
XLR 3 F
Weight (output stage)
70 g
Weight (capsule only)
11 g
Diameter
22 mm
Length (capsule only)
18 mm
Length (microphone)
108 mm

1) according to IEC 60268-1; CCIR-weighting acccording to CCIR 468-3, quasi peak; A-weighting according to IEC 61672-1, RMS
2) according to IEC 60268-1; CCIR-weighting acccording to CCIR 468-3, quasi peak; A-weighting according to IEC 61672-1, RMS
3) measured as equivalent el. input signal
4) measured as equivalent el. input signal
5) according to IEC 60268-1; CCIR-weighting acccording to CCIR 468-3, quasi peak; A-weighting according to IEC 61672-1, RMS
6) according to IEC 60268-1; CCIR-weighting acccording to CCIR 468-3, quasi peak; A-weighting according to IEC 61672-1, RMS