EQUIPMENT Microphones Large diaphragm microphone

Neumann U87 Ai Studio Set Avec Suspension Silver



2899.00€ - Woodbrass
Shipping : In Stock (ship in 24 hours)



Acheter Neumann
Brand:

Neumann



Description from Woodbrass :
In a word: The Neumann classic. Three directional characteristics and switchable pre-attenuation ensure suitability for a wide range of applications. The U 87* is probably the best known and most widely used Neumann studio microphone. It is equipped with a large dual-diaphragm capsule with three directional patterns: omnidirectional, cardioid and figure-8. These are selectable with a switch below the headgrille.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.Furthermore, the low frequency response can be reduced to compensate for proximity effect.ApplicationsThe 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 featuresThe 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 patternsThe 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 featuresThe 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 attenuationA 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. SpecificationsAcoustical operating principle Pressure gradient transducerDirectional pattern Omnidirectional, cardioid, figure-8 plusFrequency range 20 Hz ... 20 kHzSensitivity at 1 kHz into 1 kohm 20/28/22 mV/Pa1)Rated impedance 200 ohmsRated load impedance 1 kohmsEquivalent 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 dBMaximum output voltage 390 mVDynamic range of the microphone amplifier (A-weighted) 105 dBSupply voltage (P48, IEC 61938) 48 V ± 4 VCurrent consumption (P48, IEC 61938) 0.8 mAMatching connectors XLR3FWeight 500 gDiameter 56 mmLength 200 mmCaution: Shockmount EA 87 sold separately

Spécifications

Principe de fonctionnement acoustique : Transducteur à gradient de pression
Directivité : Omnidirectionnelle, cardioïde, bidirectionnelle (figure de 8)
Réponse en fréquence : 20 Hz à 20 kHz
Sensibilité à 1 kHz, charge 1 kOhm : 20/28/22 mV/Pa1)
Impédance de sortie nominale : 200 Ohms
Impédance de charge conseillée : 1 kOhm
Niveau de bruit équivalent, selon CCIR2) : 26/23/25 dB1)
Niveau de bruit équivalent, pondéré A2) : 15/12/14 dB-A1)
Rapport Signal/Bruit, selon CCIR2)(au niveau SPL de 94 dB) : 68/71/69 dB1)
Rapport signal-bruit, pondéré A2)(au niveau SPL de 94 dB) : 79/82/80 dB1)
Niveau SPL maximal, pour THD = 0,5%3) : 117 dB (cardioid)
Niveau SPL maximal, pour THD = 0,5%3)
pré-atténuateur activé : 127 dB
Tension de sortie maximale : 390 mV
Gamme dynamique du préampli micro intégré (position cardioïde), selon DIN/IEC 651 : 105 dB
Tension d'alimentation fantôme : 48 V ± 4 V
Intensité consommée : 0,8 mA
Connecteur de sortie : XLR 3M
Poids : 500 g
Diamètre : 56 mm
Longueur : 200 mm

1) Omnidirectionnel / cardioïde / bidirectionnel (figure de 8)
2) selon IEC 60268-1; Pondération CCIR selon CCIR 468-3, valeur de quasi-crête ; Pondération A selon IEC 61672-1, valeur efficace
3) Le THD du préampli micro intégré est mesuré pour une tension d'entrée équivalente à la tension de sortie de la capsule pour le niveau SPL spécifié.

Attention, le micro est vendu sans la suspension optionnelle EA 87.
Seller information :Woodbrass
Place :Nantes, France
Shipping :Livraison Mondiale


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