Neumann U 87 Ai mt

The Neumann U 87 Ai, known for its warm, rich sound 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 head-grille. 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.

The U 87 Ai condenser microphone is a large diaphragm microphone with three polar patterns and a unique frequency and transient response characteristic. Users recognise the microphone immediately by its distinctive design. It is a good choice for most general purpose applications in studios, for broadcasting, film and television. The U 87 Ai is used as a main microphone for orchestra recordings, as a spot mic for single instruments, and extensively as a vocal microphone for all types of music and speech.

The Neumann U 87 Ai Features:

• Variable large diaphragm microphone
• Pressure-gradient transducer with double membrane capsule
• The studio microphone classic
• Three directional characteristics: omni, cardioid, figure-8
• Switchable low frequency roll-off
• Switchable 10 dB pre-attenuation
• Ideal as main and as support microphone in the most differing recording situations
• Advanced Output Circuitry - Although the microphone features the original capsule, the U 87 Ai features improved output electronics that provide higher sensitivity and improved signal-to-noise ratio
• Specifications:
  • Acoustical operating principle: Pressure gradient transducer
  • Directional pattern: Omnidirectional, cardioid, figure-8
  • 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