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Neumann U 87 Ai Studio Set

Kondensatormikrofon med multi-karakteristikk inkl oppheng

Neumann U 87 Ai Studio Set
Varenr.: 100673
Lagerstatus: Best. vare
kr 24 290 inkl. mva. kr 19 432 eks. mva.
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Neumann U 87 Ai er på mange måter mikrofonen over alle mikrofoner. Den er standard i alle store, seriøse studioer og et must i kringkastingssammenheng. Få merke- og modellnavn har vel på like tydelig vis satt sitt historiske preg på platehistorien, som nettopp U 87 Ai. Dette er mikrofonenes svar på Stratocaster, Les Paul, Marshall og Ludwig. Har du ikke en Neumann U 87 i arsenalet kan du nesten ikke kalle deg profesjonell...

Vel, sistnevnte utsagn er å dra den vel langt. Men faktum er at man alltid vet hva man får i en U 87. Dette er en allround-klassiker, med tre karakteristikker og dobbelt gullbelagt membran. Bruksområdene er mange; - alt fra vokal og nærmikkede instrumenter til piano-innspillinger og klassiske orkesterinstrumenter. Selv platepratere på radio har servert sine flaue vitser via U 87'ens lett vibrerende kapsel.

Arguably the best known and most widely used studio microphone in the world (for good reason), the easy-to-recognize U 87 is a classic! A distinctive design and legendary Neumann sound make this mic a must-have for pro studios. The U 87 is known for its unique frequency and transient response characteristics which deliver a smooth natural sound with a variety of source material.

Applications
The U 87 Ai condenser microphone is a large diaphragm microphone with three polar patterns and a unique frequency and transient response characteristic. Users recognize the microphone immediately by its distinctive design. It is a good choice for most general purpose applications in studios, for broadcasting, film and television.

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

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 remarkebly.

Polar patterns
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
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.

Features

  • 3 selectable directional patterns: omnidirectional, cardioid, and figure-8
  • 10dB attenuation switch
  • 127dB SPL handling
  • 20Hz to 20kHz response
  • Impedance rated at 200 ohms. I

 

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
Dynamic range of the microphone amplifier (A-weighted) 105 dB
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
______________________________________________
1)Omnidirectional / cardioid / figure-8
2) according to IEC 60268-1; CCIR-weighting acccording to CCIR 468-3, quasi peak; A-weighting according to IEC 61672-1, RMS
3) measured as equivalent el. input signal