Neumann U 87 Ai Stereo Set - Matte Black MFR# 008506
Neumann U 87 Ai Stereo Set - Matte Black
Neumann U 87 Ai Stereo Set - Matte Black Neumann U 87 Ai Stereo Set - Matte Black Neumann U 87 Ai Stereo Set - Matte Black
Large diaphragm, stereo, condenser mic set with 3 switchable polar patterns - matte black
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Description

The Neumann U 87 Ai Stereo Multi-Pattern Microphones (Matte Black) includes 2 x Neumann U 87 Ai microphones, plus all of the pertinent Neumann accessories (2 x Elastic suspension EA 87 (Matte Black), 2 x Dust cover, Aluminum case) for this iconic studio standard 3-position, multi-pattern, solid-state, large diaphragm condenser microphone stereo set. Easily the Swiss-Army Knife of condenser mics, the U 87's legendary look and performance have earned it a reputation that will sell studio time for whoever owns a pair. Versatility with reliable sonic performance, style, and confidence - all hallmarks which make the U 87 Ai the legendary microphone which it is. The U 87 was really one of the first large diaphragm, solid-state condenser microphone to offer such a wide range of features and reliable sound quality and versatility to make it still to this day one of the most coveted microphones available. The distinctive design of the U 87 Ai (a continuation of concept beginning with the U 67 family, and then the original U 87i) make it immediately recognizable by even the most novice of musicians. As a result, listing a pair of Neumann U 87 microphones on your studio's website will sell more studio time than perhaps any other microphone. Well-known for its warm and well balanced characteristics - your perfect choice as vocal microphone for all types of music and speech. The usage as main microphone for orchestra recordings or as spot mic for single instruments make it the most general-purpose microphone - in studios, for broadcasting, film and television.

The U 87 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 headgrill.

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.

Acoustic features:

The U 87 Ai is addressed from the front, marked with the Neumann logo. The frequency response of the cardioid and figure-8 directional characteristics are very flat for frontal sound incidence, even in the upper frequency range. The microphone can be used very close to a sound source without the sound becoming unnaturally harsh. By means of a high-pass filter, interferences through subsonic and low frequencies are reduced remarkably.

Polar patterns:

The dual-diaphragm capsule is elastically mounted and protected by a large headgrill. A switch below the headgrill selects the three directional patterns: Omnidirectional, Cardioid and Figure-8. A window above this switch shows the symbol of the selected characteristic.

Electrical features:

The letter A in the name indicates a more recent generation, as compared to the U 87 i microphones that were built from 1967 to 1986. Modifications apply to the electronic components of the microphone only; the capsule remained unchanged.

The present-day circuitry increases the operational headroom of the U 87 Ai by supplying the bias voltages for the capsule through a reduced resistance. The result is a higher sensitivity of 10 dB for identical sound pressure levels, and an improved S/N ratio of 3 dB.

Filter and attenuation:

A switch located at the rear attenuates the sensitivity by 10 dB. When this switch is activated, the microphone accepts sound pressure levels up to 127 dB (equivalent to a sound pressure of 45 Pa) without distortion.

An additional switch at the rear allows to change the microphone's cutoff frequency. This reduces low frequency interference directly at the input of the microphone amplifier.

This setting also compensates for the unavoidable bass boost that occurs with all pressure gradient transducers when they are used at close distance (proximity effect).

The cardioid characteristic maintains a smooth frequency response at a distance of 30 to 40 cm, the figure-8 characteristic even at a distance of 15 to 20 cm.

Neumann U 87 Ai Stereo Set (Matte Black) 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
  • Neumann U 87 Ai Stereo Set (Matte Black) Specifications
  • Acoustical operating principle: Pressure gradient transducer
  • Directional pattern: Omnidirectional, cardioid, figure-8 plus
  • Frequency range: 20 Hz - 20 kHz
  • Sensitivity at 1 kHz into 1k Ohm: 20/28/22 mV/Pa1)
  • Rated impedance: 200 Ohms
  • Rated load impedance: 1k Ohms
  • Equivalent noise level, CCIR2): 26/23/25 dB1)
  • Equivalent noise level, A-weighted2): 15/12/14 dB-A1)
  • Signal-to-noise ratio, CCIR2) (rel. 94 dB SPL): 68/71/69 dB1)
  • Signal-to-noise ratio, A-weighted2) (rel. 94 dB SPL): 79/82/80 dB1)
  • Maximum SPL for THD 0.5%3): 117 dB (cardioid)
  • Maximum SPL for THD 0.5% with preattenuation3): 127 dB
  • Maximum output voltage: 390 mV
  • Supply voltage (P48, IEC 61938): 48 V ± 4 V
  • Current consumption (P48, IEC 61938): 0.8 mA
  • Matching connectors: XLR3F
  • Weight: 500 g / 1.1 lbs
  • Diameter: 56 mm / 2.20 inches
  • Length: 200 mm / 7.874 inches
  • Neumann U 87 Ai Stereo Set (Matte Black) Includes
  • 2 x Microphone U 87 Ai (Matte Black)
  • 2 x Elastic suspension EA 87 (Matte Black)
  • 2 x Dust cover
  • Aluminium case
Technical Specifications

Additional Information

Condition New
Package Contents Includes two elastic suspension EA 87 (mt), two dust covers, and aluminum case
Length 200 mm
Diameter 56 mm
Unit Weight 500 g
Transducer Type Condenser
Polar Pattern Cardioid, Bi-Directional / Figure-Eight, Omni-Directional
Number of Microphones Stereo Pair
Phantom Required Yes
Impedance Rated: 150 Ohms / Rated load: 1 kOhm
Frequency Range 20 Hz - 20 kHz
input_pad -10 dB
Sensitivity Cardioid: -31.1 dBV/Pa (28 mV) / Omni: -34 dBV/Pa (20 mV) / Bi: -33.2 dBV/Pa (22 mV)
Max. SPL 117 dB; 127 dB with pad
Analog or Digital Analog
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