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Neumann U 87 Ai Condenser Microphone Stereo Set - Black
The Neumann U 87 Ai is probably the best-known and most frequently used studio microphone the world over. Its smooth and refined sound is as iconic as its elegant exterior design. The U 87 Ai is the standard microphone for speech and vocals. Three polar patterns plus pad and low cut options make it adaptable to a wide range of applications.
Features:
- The world’s most famous studio microphone
- Classic sound, instantly recognizable yet versatile
- Balanced frequency response
- Three polar patterns: omni, cardioid, figure-8
- Switchable low cut and pad
- Very low self-noise
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Technical Specification
- Acoustical operating principle: Pressure gradient transducer
- Directional pattern: Omnidirectional, cardioid, figure-8 plus
- Frequency range: 20 Hz ... 20 kHz
- Sensitivity at 1 kHz into 1 kohm: 20/28/22 mV/Pa1)
- Rated impedance: 200 ohms
- Rated load impedance: 1 kohms
- 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
- Diameter: 56 mm
- Length: 200 mm
- Warranty 1 year
What Is In The Box
- 2 x Microphone U 87 Ai (mt)
- 2 x Elastic suspension EA 87 (mt)
- 2 x Dust cover
- Aluminium case
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Manufacture Description
Acoustic features of the Neumann U87Ai
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 of the U87Ai
The dual-diaphragm capsule is elastically mounted and protected by a large headgrille. A switch below the headgrille selects the three directional patterns: omnidirectional, cardioid and figure-8. A window above this switch shows the symbol of the selected characteristic.
Electrical features of the Neumann U87Ai
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.