Neumann KM 183 A NX Omni Condenser Microphone

The KM 183 A from Neumann is an NX Omni Condenser Microphone.

Compared to its predecessor, the Series KM 100, the new system KM A 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. 16½ 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, transformerless output stage KM A operates with P48 phantom power. A switchable -10 dB preattenuation allows for sound pressure levels of up to 152 dB (depending on capsule type) without distortion artifacts.

Neumann KM 183 A NX Features

• Directional characteristic: omni (diffuse-field equalized)
• 150 dB maximum SPL
• 81 dB S/N ratio
• 12 mV/Pa sensitivity

• KM 183 A NX omnidirectional condenser microphone1
• Windscreen1
• Stand mount swivel1
• Wooden box1

• Transducer TypeCondenser
• Polar PatternOmnidirectional
• Frequency Range20 Hz - 20 kHz
• Rated Output Impedance50 ohms
• Sensitivity at 1kHz into 1 kΩ12 mV/Pa
• Equivalent Noise Level, CCIR24 dB
• Equivalent Noise Level, A-Weighted13 dB-A
• Max. SPL for THD 0.5%140 dB
• Max. SPL for THD 0.5% with Preattenuation150 dB
• Signal-to-Noise Ratio, CCIR (re. 94 dB SPL)69 dB
• Signal-to-Noise Ratio, A-Weighted (re. 94 dB SPL)81 dB
• Supply Voltage (P48, IEC 61938)48 V
• Current Consumption (P48, IEC 61938)max. 3.5mA
• Matching ConnectorXLR 3F
• Dimensions0.87" diameter x 4.25" length