The U 87 is probably the best known and most widely used Neumann studio microphone. It is equipped with a large dual-diaphragm capsule with three directional patterns: omnidirectional, cardioid and figure-8. These are selectable with a switch below the headgrille.
A 10 dB attenuation switch is located on the rear. It enables the microphone to handle sound pressure levels up to 127 dB without distortion.
Furthermore, the low frequency response can be reduced to compensate for proximity effect.
Features:
- Acoustical operating principle: Pressure gradient transducer
- Directional pattern: Omnidirectional, cardioid, figure-8 plus
- Frequency range: 20 Hz ... 20 kHz
- Sensitivity at 1 kHz into 1 kohm: 20/28/22 mV/Pa*
- Rated impedance: 200 ohms
- Rated load impedance: 1000 ohms
- Equivalent SPL CCIR 468-3: 26/23/25 dB*
- Equivalent SPL DIN/IEC 651: 15/12/14 dB-A*
- S/N ratio CCIR 468-3: 68/71/69 dB*
- S/N ratio DIN/IEC 651: 79/82/80 dB*
- Maximum SPL for THD 0.5%: 117 dB (cardioid)
- Maximum SPL for THD 0.5% with preattenuation: 127 dB
- Maximum output voltage: 390 mV
- Dynamic range of the microphone amplifier cardioid DIN/IEC 651: 105 dB
- Supply voltage: 48 V ± 4 V
- Current consumption: 0.8 mA
- Matching connectors: XLR 3F
- Weight: 500 g
- Diameter: 56 mm
- Length: 200 mm
* Omnidirectional / cardioid / figure-8
