Neumann KM 184 A nx Neumann

KM 184 A

The flexible miniature microphone system. A comprehensive selection of accessories permits adaptation to a wide range of requirements. Eight different capsules are available which are compatible to the digital miniature microphone system KM D.

The Neumann KM A / KM D Miniature Microphone System

The modular KM A / KM D miniature microphone system is a further development of the successful KM 100 series. The newly developed passive capsule design is available with 8 different directional characteristics, and can be combined modularly as desired with an analog (KM A) or  digital (KM D) output stage in accordance with the AES 42 standard. The new, considerably smaller microphone capsules and an extensive program of accessories permit excellent adaptation of the microphone system to a wide range of applications.

Through the use of the most up-to-date electronic components the system offers many electroacoustic and operational advantages, such as lower self-noise, a wider dynamic range and very high immunity to electromagnetic interference. The acoustics of the capsules were taken from the proven KM 100 system.

Overview of Microphone Capsules

KK 120: Figure-8
KK 131: Omni (free-field equalized pressure transducer)
KK 133: Omni (diffuse-field equalized pressure transducer/capsule including titanium diaphragm with exceptional acoustic properties)
KK 183: Omni (diffuse-field equalized pressure transducer)
KK 143: Wide-angle cardioid
KK 145: Cardioid with acoustic bass roll-off in free field
KK 184: Cardioid
KK 185: Hypercardioid

KM A/KM D Output Stage

The KM A analog output stage with P48 phantom power has a switch for pre-attenuation of 10 dB. The microphones can thus handle levels of up to 152 dB (depending on the capsule type). The KM D digital output stage converts the signal from the capsule directly into a digital signal. The result is an AES/EBU signal with 24 bits and a large dynamic range. The integrated digital signal processor (DSP) permits remote control of the microphones, including the digital gain, pre-attenuation (6 dB, 12 dB or 18 dB) and low-cut filter (0 Hz, 40 Hz, 80 Hz or 160 Hz). An integrated peak limiter and compressor/limiter with additional de-esser function prevents any overloading of the audio signal.

The dimensions (diameter 22 mm, length 93 mm) of the analog and digital output stages are identical. As a result, all accessories can be used in combination with both output stages.
Upon request, a mechanical adapter can be supplied to adapt microphone capsules of the KM 100 system (AK series) to the KM A and KM D output stages.

The modular solution permits the microphone capsule to be separated from the output stage by a distance of up to 100 m. The LC 4 microphone cable with a length of 5 or 10 meters is available as a standard solution. Alternatively, capsule extensions of different lengths, swivel joints and stand mounts, etc., can be used for a flexible system setup.

The capsule heads KK 183, KK 184 or KK 185, together with the appropriate output stage, are also available as a set, in which case they are referred to as KM 183 A, KM 183 D, etc.

Features

Miniature microphones with 8 exchangeable capsules

Switchable 10 dB preattenuation

Set includes windshield and clamp

Transformerless circuitry

Extensive accessories

 

Technical Data

 

Technical data KM A +

	KK 131	KK 133	KK 183
Acoustic operating principle	Pressure transducer	Pressure transducer	Pressure transducer
Directional pattern	omni free-field equalized	omni diffuse-field equalized	omni diffuse-field equalized
Frequency range	20 Hz…20 kHz	20 Hz…20 kHz	20 Hz…20 kHz
Sensitivity1)	12 mV/Pa	15 mV/Pa	12 mV/Pa
Rated impedance	50 ohms	50 ohms	50 ohms
Rated load impedance	1000 ohms	1000 ohms	1000 ohms
Equivalent noise level, CCIR3)	24 dB	28 dB	24 dB
Equivalent noise level, A-weighted3)	13 dB-A	15 dB-A	13 dB-A
Signal-to-noise ratio2) CCIR3)	70 dB	66 dB	69 dB
Signal-to-noise ratio2) A-weighted3)	81 dB	79 dB	81 dB
Max SPL (THD<0.5%)	140 dB	138 dB	140 dB
Max SPL (THD<0.5%) with preattenuation	150 dB	148 dB	150 dB
Supply voltage (P48, IEC 61938)	48 V	48 V	48 V
Current consumption (P48, IEC 61938)	max. 3.5 mA	max. 3.5 mA	max. 3.5 mA
Matching connector	XLR 3 M	XLR 3 M	XLR 3 M
Weight output stage	70 g	70 g	70 g
Weight capsule	11 g	49 g	11 g
Diameter	22 mm	22 mm	22 mm
Length	108 mm	128 mm	108 mm

Technical Data KM A +

	KK 143	KK 184	KK 145
Acoustic operating principle	Pressure gradient transducer	Pressure gradient transducer	Pressure gradient transducer
Directional pattern	Cardioid wide	Cardioid	cardioid low frequ. roll-off
Frequency range	20 Hz…20 kHz	20 Hz…20 kHz	20 Hz…20 kHz
Sensitivity1)	15 mV/Pa	15 mV/Pa	14 mV/Pa
Rated impedance	50 ohms	50 ohms	50 ohms
Rated load impedance	1000 ohms	1000 ohms	1000 ohms
Equivalent noise level, CCIR3)	22 dB	22 dB	22 dB
Equivalent noise level, A-weighted3)	13 dB-A	13 dB-A	14 dB-A
Signal-to-noise ratio2) CCIR3)	70 dB	70 dB	70 dB
Signal-to-noise ratio2) A-weighted3)	81 dB	81 dB	80 dB
Max SPL (THD<0.5%)	138 dB	138 dB	138 dB
Max SPL (THD<0.5%) with preattenuation	148 dB	148 dB	148 dB
Supply voltage (P48, IEC 61938)	48 V	48 V	48 V
Current consumption (P48, IEC 61938)	max. 3.5 mA	max. 3.5 mA	max. 3.5 mA
Matching connector	XLR 3 M	XLR 3 M	XLR 3 M
Weight output stage	70 g	70 g	70 g
Weight capsule	15 g	15 g	15 g
Diameter	22 mm	22 mm	22 mm
Length	108 mm	188 mm	108 mm

Technical Data KM A +

	KK 185	KK 120
Acoustic operating principle	Pressure gradient transducer	Pressure gradient transducer
Directional pattern	Hypercardioid	Figure-8, side-fire
Frequency range	20 Hz…20 kHz	20 Hz…20 kHz
Sensitivity1)	10 mV/Pa	12 mV/Pa
Rated impedance	50 ohms	50 ohms
Rated load impedance	1000 ohms	1000 ohms
Equivalent noise level, CCIR3)	24 dB	25 dB
Equivalent noise level, A-weighted3)	15 dB-A	15 dB-A
Signal-to-noise ratio2) CCIR3)	69 dB	69 dB
Signal-to-noise ratio2) A-weighted3)	78 dB	79 dB
Max SPL (THD<0.5%)	142 dB	140 dB
Max SPL (THD<0.5%) with preattenuation	152 dB	150 dB
Supply voltage (P48, IEC 61938)	48 V	48 V
Current consumption (P48, IEC 61938)	max. 3.5 mA	max. 3.5 mA
Matching connector	XLR 3 M	XLR 3 M
Weight output stage	70 g	70 g
Weight capsule	19 g	37 g
Diameter	22 mm	24 mm
Length	108 mm	130 mm
________________________ All data with respekt to 0 dB pre-attenuation and 0 dB gain. 1) at 1 kHz 2) re 94 dBSPL 3) according to IEC 60268-1; CCIR-weighting according to CCIR 468-3, quasi peak; A-weighting according to IEC 61672-1, RMS

 

Accessories

 Adapter Cable AC 22
Adapter Cable AC 25
Adapter Cable AC 27
Adapter Cable AC 29
Auditorium Hanger MNV 100
Auditorium Hanger MNV 21 mt
Auditorium Hanger MNV 87 (mt)
Battery Supply BS 48 i
Battery Supply BS 48 i-2
Boom Attachment M 212 c
Capsule Extension KVG 1120 nx
Capsule Extension KVG 130 nx
Capsule Extension KVG 160 nx
Capsule Head KK 120 (nx)
Capsule Head KK 131 (nx)
Capsule Head KK 133 (nx)
Capsule Head KK 143 (nx)
Capsule Head KK 145 (nx)
Capsule Head KK 183 (nx)
Capsule Head KK 184 (nx)
Capsule Head KK 185 (nx)
Double Mount DS 120
Elastic Suspension EA 2124 A mt
Floor Stand MF 5
Microphone Cable IC 3 mt
Microphone Cable LC 4
Output Stage KM A (nx)
Popscreen PS 15
Power Supply N 248
Shock mount Z 26 mt
Sound Diffraction Sphere SBK 130 A
Stand M 210/1
Stand M 214/1
Stand M 252
Stand Extension STV 4/20/40/60
Stand Mount MZGE 8000
Stand Mount MZGE 8002
Stand Mount SG 109
Stand Mount SG 21 bk
Stand Mount SGE 100
Stereo Mount STH 100
Stereo Mount STH 120
Swivel Joint SG 110 nx
Table Flange TF 221 c
Table Stand MF 2
Table Stand MF 3
Table Stand MF 4
Windscreen WNS 100
Windscreen WNS 110
Windscreen WNS 120
Windscreen WS 100