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Neumann KMR 82 i Mt

Long shotgun (16 in) with case and MZW 67

Free Tech Support

$1,920.00

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Description

The KMR 82 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 82 is very often used on stage.

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 82 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 82 is a shotgun microphone 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 82 has a frequency independent directivity within a pickup angle of 45° for audio signals that determine the tonal balance of the program material.

Filter

Between 2 kHz and 15 kHz the KMR 82 has a boost to compensate for HF transmission losses in air when recording distant sound sources. This may overemphasize any sibilance if the microphone is used close-up. Therefore, a two-position slide switch allows to select the setting that is best for balanced upper frequencies.

The KMR 82 has a high-pass filter to suppress subsonic interference. The cutoff frequency may be raised to 120 Hz ( - 3 dB) with a built-in two-position slide switch.

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 tool 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.

Specs

Operating PrinciplePressure Gradient
TransducerCondenser
Polar PatternSupercardioid
Frequency Range20 Hz to 20 kHz
Signal to Noise Ratio71 dB CCIR82 dB A-Weighted
Equivalent Noise Level23 dB CCIR12 dB A-Weighted
Maximum SPL128 dB SPL 0.5%
Impedance150 ohms
Load Impedance1 kOhms
Sensitivity21 mV/PA @ 1 kHz into 1 kOhms, re: 1 V/Pa
Power Requirements48 V+/- 4 V
Output Connectors3-pin XLR
Operating Current Consumption0.7 mA
Length15.55" (395 mm)
Diameter0.83" (21 mm)
Weight8.82 oz (250 g)
Package Weight1.45 lb
Box Dimensions (LxWxH)16.85 x 3.78 x 2.913"

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