Microfoane Shotgun Neumann
Short version of the classic shotgun mic, with switchable filter
and pre-attenuation functions. Excellent off-axis (lateral and rear)
attenuation. Free of coloration.
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.
Recordings for broadcasting/ENG, film and video productions
Medium length shotgun spot mic in noisy surroundings
Balanced weight during handheld and boom/fishpole operation
These are just some of the most common applications. We recommend
additional experimentation to gain maximum use from this microphone.
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
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
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
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
For mobile use a handle and an elastic suspension are available.
Interference tube microphone with shotgun directional characteristic
High lateral and back attenuation
Switchable filter or preattenuation features
Extensive accessories for outdoor use
Light weight: 145 g
||20 Hz ... 20 kHz
|Sensitivity at 1 kHz into 1 kohm
|Rated load impedance
|Equivalent noise level, CCIR (1)
|Equivalent noise level, A-weighted
CCIR (1) (rel. 94 dB SPL)
|Signal-to-noise ratio, A-weighted
(1) (rel. 94 dB SPL)
|Maximum SPL for THD 0.5% (2)
|Maximum SPL for THD 0.5% with
|Maximum output voltage
|Dynamic range of the microphone
|Supply voltage (P48, IEC 61938)
||48 V ± 4 V
|Current consumption (P48, IEC
1) according to IEC 60268-1; CCIR-weighting acccording to CCIR 468-3,
quasi peak; A-weighting according to IEC 61672-1, RMS
2) measured as equivalent el. input signal
Interactive view of diagrams (click pe poza)
Microphone KMR 81 i (mt)
Windscreen WS 81
Leather carrying case
Garantie: 24 luni.