Neumann KMR 81 D
PRISTINE DIALOGUE, UNCOLORED SOUND IN THE DIGITAL DOMAIN
The Neumann KMR 81 D takes the well-established KMR 81 i shotgun microphone into the digital domain. It provides all of the features of its analog counterpart, which made it a favorite of sound engineers in movie and documentary productions. Additionally, it offers all the advantages of the digital technology, such as an extended dynamic range, a more robust operation (EMC safe) and clipping protection by means of the integrated peak limiter/compressor.
Using the DMI-2 or DMI-8 digital microphone interface together with the Remote Control Software (RCS), any pre-programmed settings may be stored in the microphones.
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Shotgun microphone for medium distances
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Lobe shaped pattern with 90° pickup angle
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High directivity without off-axis coloration
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Integrated A/D converter, DSP functions
Technical specifications:
| Acoustical operating principle | Pressure gradient interference transducer |
| Directional Pattern | Supercardioid/lobe |
| Frequency Range | 20 Hz ... 20 kHz |
| Sensitivity at 1 kHz, 0 dB gain, and 94 db SPL | -36 dB FS |
| Equivalent noise level, CCIR 1 | 21 dB |
| Equivalent noise level, A-weighted 2 | 9 dB-A |
| Maximum SPL at 0 dBFS (re. 94 dB SPL) | 123 dB SPL |
| Maximum SPL with 18 dB preatt. (RCS) (re. 94 dB SPL) | 141 dB SPL |
| Signal-to-noise ratio, CCIR (re. 94 dB SPL) 3 | 73 dB |
| Signal-to-noise ratio, A-weighted (re. 94 dB SPL) 4 | 85 dB |
| Matching connector | XLR 3 F |
| Weight | 90 g |
| Diameter | 22 mm |
| Length | 212 mm |
| A/D conversion | Neumann process (patented), 28-bit internal word length |
| Digital signal processing | Fixed-point, variable internal word length 28 bits to 60 bits |
| Sampling rates | 44.1/48/88.2/96/176.4/192 kHz |
| Output data format | 24 bits as per AES/EBU (AES 3) |
| Latency: 44.1/48 kHz | 41 samples |
| Latency: 88.2/96 kHz | 49 samples |
| Latency: 176.4/192 kHz | 99 samples |
| Synchronization: Free-running (non-synchronous operation), frequency stability | ± 25 ppm |
| Synchronization: Synchronous operation, pulling range | min. ± 100 ppm |
| Supply voltage range | +7 V to +10.5 V |
| Current consumption | max. 150 mA (DDP) |