Neumann KMR 81I-MT, Short shotgun (9 in) with twist pack case and WS 81

Neumann KMR 81I-MT, Short shotgun (9 in) with twist pack case and WS 81

The Neumann KMR 81I-MT is a shotgun microphone that ues a combination of a pressure gradient and an interference tube. If the wavelength of the frequency is longer thatn the tube length, the microphone works as a pressure gradient transducer.  At higher frequencies the Neumann KMR 81I-MT operates as an interference transducer for lateral sound. Off axis sound source are picked up with reduced level, but without coloration. In addition, the Neumann KMR 81I-MT microphone is 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.

A PROBLEM SOLVER WITH A TOUCH OF CLASS

The KMR 81 i is a shotgun microphone with a high directivity for situations that require the microphone to be kept at a distance from the source. This is often the case in electronic news gathering (ENG) and film dialogue recording, where the microphone must remain invisible. The KMR 81 i can also be used to obtain a clear and focused sound in noisy environments.

Technically speaking, the KMR 81 i combines a pressure gradient condenser capsule with a medium-length interference tube to achieve a narrow acceptance angle of 90˚ and excellent rejection of unwanted sound. Unlike many other shotgun microphones, the Neumann KMR 81 i’s lobe shaped pickup pattern is frequency-independent. In other words, off-axis sound is picked up at reduced level but without unwanted coloration. This makes it easy to correct a misaligned microphone in postproduction.

Compared to other shotgun microphones, the Neumann KMR 81 i offers a more natural sound image. Its frequency response is highly linear up to 2 kHz while a broad treble lift compensates for high frequency losses that occur when recording at greater distances. The KMR 81 i offers very low self-noise of only 12 dB-A and a high sensitivity of 18 mV/Pa, which can be reduced by 10 dB to protect the microphone input from overload. The KMR 81 i can handle high SPLs of up to 128 dB without audible distortion (138 dB SPL with the preattenuation switch engaged). A second switch activates a 200 Hz low cut to compensate for the proximity effect when the KMR 81 i is use at short distances.

Neumann KMR 81I-MT Main Features

• High directivity with 90° recording angle
• Excellent rejection of unwanted sound
• Natural sound without off-axis coloration
• Low cut and pad switches
• Lightweight (145 g)
• Low power consumption
• Shotgun microphone for medium distances
• Lobe shaped pattern with 90° pickup angle
• High directivity without off-axis coloration