Neumann U 87 Ai Condenser Microphone (Nickel)

Neumann U 87 Ai Condenser Microphone (Nickel)

Neumann U 87 Ai Condenser Microphone (Nickel)

B&H # NEU87AI MFR # U 87 AI
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Color: Nickel

Neumann U 87 Ai Condenser Microphone (Black)

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Neumann U 87 Ai Condenser Microphone (Nickel)

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  • 1Description

The nickel U 87 Ai Condenser Microphone from Neumann is a large dual-diaphragm condenser microphone. It features three directional patterns, including omnidirectional, cardioid and figure-8. These are selectable with a switch below the head grille and the window above this switch shows the symbol of the selected characteristic. 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. The low frequency response can be reduced to compensate for proximity effect.

The U 87 Ai is used as a main microphone for orchestra recordings, as a spot microphone for single instruments, and extensively as a vocal microphone for all types of music and speech.

The U 87 Ai is addressed from the front. 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, interference through subsonic and low frequencies are reduced.

The circuitry increases 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.

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, and the figure-8 characteristic at a distance of 15 to 20 cm.

Variable large diaphragm microphone
Pressure-gradient transducer with double membrane capsule
Omnidirectional, cardioid, and figure-8 characteristics
Switchable low frequency roll-off
Switchable 10 dB pre-attenuation
Great as a main or as a support microphone
UPC: 615104070226
In the Box
Neumann U 87 Ai Condenser Microphone (Nickel)
  • Wooden Box
  • Limited 2-Year Warranty
  • Table of Contents
    • 1Description
    Operating Principle Pressure Gradient
    Transducer Condenser
    Polar Pattern Cardioid, Figure 8, Omnidirectional
    Frequency Range 20 Hz to 20 kHz
    Signal to Noise Ratio 71: dB CCIR
    69: dB CCIR
    68: dB CCIR
    82: dB A-Weighted
    80: dB A-Weighted
    79: dB A-Weighted
    Equivalent Noise Level 23 dB CCIR
    25 dB CCIR
    26 dB CCIR
    12 dB A-Weighted
    14 dB A-Weighted
    15 dB A-Weighted
    Maximum SPL 117 dB SPL 0.5%
    127 dB SPL 0.5% with 10 dB Pad Engaged
    Impedance 200 ohms
    Load Impedance 1 kOhms
    Sensitivity 28 mV/PA @ 1 kHz into 1 kOhms
    22 mV/PA @ 1 kHz into 1 kOhms
    20 mV/PA @ 1 kHz into 1 kOhms
    Power Requirements 48 V+/- 4 V
    Pad Yes, 10 dB
    Output Connectors 3-Pin XLR
    Operating Current Consumption 0.8µA
    General
    Length 7.87 " (200 mm )
    Diameter 2.20" (56 mm)
    Weight 1.10 lb (500 g)
    Packaging Info
    Package Weight 2.16 lb
    Box Dimensions (LxWxH) 10.1 x 4.75 x 4.0"
    Mic Shootout 1: Classic Large Diaphragm Condensers

    Neumann U 87 Ai Condenser Microphone (Nickel) Review

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