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Neumann KMR81 i (black)

Shotgun Microphone
  • Neumann KMR81 i (black)
  • Neumann KMR81 i (black)
  • Neumann KMR81 i (black)
  • Neumann KMR81 i (black)
  • Neumann KMR81 i (black)
  • Neumann KMR81 i (black)
  • Neumann KMR81 i (black)
  • Neumann KMR81 i (black)
EUR 1452.55
MSRP: EUR 1529.00
Incl. VAT, free shipping in Germany
shotgun microphones with a very directional characteristic.

The classic shotgun in a short version with switchable filter and Vordämpfungsfunktionen. High sides and back ratio and no distortions.

Description

The KMR 81 is a shotgun microphone with a high directivity that remains within the acceptance angle independent of the frequency.

The advantage is that a sound source, for example an actor on stage, will not change its apparent tonal balance when moving within this area.

Applications

Shotgun microphones are particularly useful in recording situations where a microphone cannot be positioned within the desired distance of the sound source to produce a sufficiently loud signal level.

Typical applications are film and video recordings, where the microphone should not appear in the picture.

The KMR 81 has been specifically designed for electronic news gathering.

Acoustic features

In principle, Neumann shotgun microphones use a combination of a pressure gradient transducer and an interference tube. If the wavelength of the frequency is longer than the tube length, the microphones work as pressure gradient transducers. At higher frequencies they operate as interference transducers for lateral sound. Off-axis sound sources are picked up with reduced level, but without coloration.

Therefore, the microphones are well suited to record individual instruments of an orchestra. The pickup areas of several shotgun microphones may even overlap as, for example, during recordings on a large stage, without causing any problem.

The KMR 81 is less sensitive to wind and pop noise when compared to the KM 150 miniature microphone with a similar high directivity. The shotgun microphone features extremely low self noise, good impulse response, and high output level.

Polar patterns

The KMR 81 is a shotgun microphones with a very directional characteristic.

The microphone capsule is positioned inside a housing tube that is acoustically open but has a high flow resistance. The directional pattern of the microphone is lobe shaped. The attenuation of lateral sound is practically independent of the frequency. The KMR 81 has a frequency independent directivity within a pickup angle of 90° for audio signals that determine the tonal balance of the program material.

Filter and attenuation

The microphone has a 10 dB attenuation switch to prevent the input of the following unit from overloading.

A second switch activates a 200 Hz high-pass filter. Toward the lower frequencies the sensitivity of the microphone is attenuated by approximately 15 dB at 50 Hz. The frequency range above 200 Hz is unaffected.

Use on location

The shotgun microphone features very high output capability and a remarkably low self-noise level.

Its low power consumption, light weight, and low sensitivity to wind and handling noise, makes it an ideal tools for news gathering on location.

Small dimensions, together with a balanced center of gravity, make handling easy without any whiplash effect.

However, when on location and during strong wind conditions, we recommend using an additional wind screen (included as standard accessory). The wind screen is made of polyurethane foam and also serves as soft padding of the microphone in its leather carrying case.

For mobile use a handle and an elastic suspension are available.

Attributes

Product Dimensions
Depth 160mm
Width 250mm
Height 66mm
Product Details
Product Number 106950
Brand Neumann
Series KMR (Kleinmembran Richtrohr)
Category Shotgun Microphone
Brand Category Neumann - Shotgun Microphones
Relevancy rank 10 of 22
Date March 2007
Dimension
Weight 0.51kg
Box Width 250mm

Properties

Acoustical operating principle Interference transducer
Directional pattern Supercardioid/lobe
Frequency range 20 Hz ... 20 kHz
Sensitivity at 1 kHz into 1 kohm 18 mV/Pa
Rated impedance 150 ohms
Rated load impedance 1 kohms
Equivalent noise level, CCIR1) 23 dB
Equivalent noise level, A-weighted1) 12 dB-A
Signal-to-noise ratio, CCIR1) (rel. 94 dB SPL) 71 dB
Signal-to-noise ratio, A-weighted1) (rel. 94 dB SPL) 82 dB
Maximum SPL for THD 0.5%2) 128 dB
Maximum SPL for THD 0.5% with preattenuation2) 138 dB
Maximum output voltage 1.3 dBu
Dynamic range of the microphone amplifier (A-weighted) 116 dB
Supply voltage (P48, IEC 61938) 48 V ± 4 V
Current consumption (P48, IEC 61938) 0.8 mA
Matching connector XLR3F
Weight 145 g
Diameter 21 mm
Length 226 mm

- Weight: 0.510kg
- Height: 66mm
- Width: 250mm
- Depth: 160mm

Documents (1)

Brand

Neumann was founded in Germany and is celebrated for its pioneering work in microphone technology, producing iconic studio microphones like the U47 and U87. Acquired by Sennheiser in 1991, it continues to excel in producing high-quality audio equipment widely used in the recording and broadcasting industry, known for its exceptional sound quality and precision.
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