Studio microphone
Neumann U 87 Ai MT Stereo Black

Product code: 118734
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AED 27,600.30
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Description

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Description

The Neumann U 87 Ai is widely recognized as Neumann's most famous and widely-used microphone. It features a large dual-diaphragm capsule that offers three different directional patterns: omnidirectional, cardioid, and figure-8. You can easily select these patterns using the switch located below the protective grille.

At the rear of the microphone, there is a 10 dB attenuation switch that allows for distortion-free operation even when dealing with sound pressure levels of up to 127 dB. Additionally, there is an option to adjust the cutoff frequency and attenuate the low-frequency signal to compensate for the proximity effect.

Acoustic Features:

The front side of the U 87 Ai, marked with the Neumann logo, provides a flat response and consistent performance across the upper frequency range when using the cardioid and figure-8 patterns. This means that you can position the microphone very close to the sound source without creating unnatural sharpness. Furthermore, a low-cut filter effectively reduces interference between infrasonic and low frequencies.

Directional Patterns:

The dual-diaphragm capsule is securely mounted on an elastic suspension and protected by a metal grille. The switch located underneath allows you to switch between omnidirectional, cardioid, and figure-8 patterns. The selected pattern is indicated by a symbol above the switch.

Filter and Attenuator:

The 10 dB attenuation switch, located at the rear, decreases the microphone's sensitivity. When activated, the microphone can handle sound pressure levels of up to 127 dB (equivalent to 45 Pa) without distorting the sound. There is also another switch in the same position that allows for the adjustment of the cutoff frequency of the high-pass filter, which effectively reduces low-frequency interference at the input of the microphone preamplifier. Moreover, the filter compensates for the proximity effect, which is a characteristic of pressure gradient microphones when they are positioned close to the sound source.

Features:

  • Includes a matched pair of microphones
  • Features a large-diaphragm and switchable directional patterns
  • Utilizes a pressure gradient transducer with a dual-diaphragm capsule
  • Designed as a classic studio microphone
  • Offers three directional patterns: omnidirectional, cardioid, and figure-8
  • Has a switchable high-pass filter with adjustable cutoff frequency
  • Includes a 10 dB attenuator switch
  • Exceptional as both a primary and secondary microphone for most applications

Package Contents:

  • 2 microphones
  • 2 EA 87 shock mounts
  • Aluminum case
  • Documentation
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Characteristics

Characteristics

Brand
Audio signal format
stereo
Color
Connectors
XLR
Directional characteristic switch
yes
Free-field sensitivity without load (1 kHz), mV/Pa
28
Impedance, Ohms

No higher than 32 Ohms for smartphone headphones. When using a good player or amplifier, it can be up to 100 Ohms. For stationary models you should coordinate the impedance with the amplifier power

Glossary of terms
200
Max SPL, dB
127
Microphone polar pattern

Omnidirectional, cardioid and supercardioid. It determines the sensitivity of the microphone to sound relative to the direction or angle, i.e. shows how well the microphone "hears" sound from different sides

Glossary of terms
bidirectional

Bidirectional polar pattern of the microphone.

Словарь терминов
,
circle

The microphone polar pattern which allows it to capture sound evenly from all sides.

Словарь терминов
Microphone type
condenser

A metal membrane consisting of plates (a condenser) oscillates under the influence of sound air flows converting a sound wave into an electromagnetic one.

Словарь терминов
Phantom power

Necessary for condenser microphones

Glossary of terms
yes

Simultaneous transmission of DC power and information signals over one wire.

Словарь терминов
Signal-to-noise ratio, dB

The higher signal-to-noise ratio, the clearer sound and the bigger the dynamic range provided by the system

Glossary of terms
82
The highest microphone frequency, kHz
20
The lowest microphone frequency, Hz
20
Depth, mm
56
Height, mm
200
Width, mm
56
Weight, g
500