Neumann U 87 Ai Condenser Microphone (Studio Set, Nickel)

BH #NEU87AISZ • MFR #U87AISETZ
Neumann
Neumann U 87 Ai Condenser Microphone (Studio Set,<sp> </sp>Nickel)
In Stock
$3,600.00

Neumann U 87 Ai Condenser Microphone (Studio Set, Nickel)

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Neumann U87 Overview

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

Neumann U87 Specs

Microphone
Operating PrinciplePressure Gradient
CapsuleCondenser
Polar PatternCardioid, Figure-8, Omnidirectional
Pattern SelectionSwitched
Pad-10 dB
Performance
Frequency Range20 Hz to 20 kHz
Maximum SPL117 dB SPL
Impedance200 Ohms
Load Impedance1000 Ohms
Sensitivity28 mV/Pa at 1 kHz into 1 Kilohms
22 mV/Pa at 1 kHz into 1 Kilohms
20 mV/Pa at 1 kHz into 1 Kilohms
Signal-to-Noise Ratio71 dB CCIR
69 dB CCIR
68 dB CCIR
82 dB A-Weighted
80 dB A-Weighted
79 dB A-Weighted
Equivalent Noise Level23 dB CCIR
25 dB CCIR
26 dB CCIR
12 dB A-Weighted
14 dB A-Weighted
15 dB A-Weighted
THD0.5%
Connectivity
Output Connectors (Analog)1 x XLR 3-Pin
Power
Operating Voltage48 V ± 4 V
Operating Current Consumption0.8 µA
Physical
Dimensionsø: 2.2 x L: 7.87" / ø: 55.88 x L: 199.9 mm
Weight1.1 lb / 500 g
Packaging Info
Package Weight5.495 lb
Box Dimensions (LxWxH)11.55 x 11.5 x 6.75"
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