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Neumann KMR 81i MT

4,25
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...
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Video microphone Neumann KMR 81i MT

Neumann KMR 81i MT

£ 1,649
£ 1,699

Product code: KMR81I-MT | ID: 230966

Neumann KMR 81i MT

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. 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. 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. 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. 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. 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. Color: Matte Black

Specs
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
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 213 mm
   

Parameters and specifications

Suitability

Features

Polar Pattern


Properties

Frequency Range

Impedance (Ohm)

150

Signal to Noise Ratio

82 dB


Acoustics

Sensitivity

18 mV

Sound Pressure Level (SPL)


Dimensions and Weight

Weight (g)

145


Country

Made in

Germany


Recommended accessories

Overall score based on 1 user review:

4,25

Rob E.

Overall impression

Date
16.06.2020

micro canon court , serré , mais pas trop, usage en extérieur recommandé, (avec suspension & rycote) là , il fera des miracles..... par contre , comme tous les micros "canon" , il prend bcp trop les resonances en interieur....., je lui prefere un km 185 dans ce cas là..