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- Neumann U87 Ai Microfono Multipatron - Facturas A Y B
NEUMANN U87/AI Muy importante!!! Leer atentamente!!! Consultar si este producto tiene ENTREGA GRATIS en Capital Federal (CABA) (Entregas de Lunes a Viernes de 9.30hs a 19hs). Si estás en Capital Federal (CABA), y querés que la entrega sea en el día o de un día para el otro mediante nuestra logística, tenés que optar por la opción : "RETIRO EN DOMICILIO DEL VENDENDOR". Caso contrario, el envío será mediante MERCADO ENVIOS. Emitimos facturas "A" y "B". he 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 U 87 Ai Specs Analog Performance Operating Principle Pressure Gradient Transducer Condenser Polar Pattern Cardioid, Figure-8, Omnidirectional Pattern Selection Switched Frequency Range 20 Hz to 20 kHz Signal to Noise Ratio 71 dB CCIR 69 dB CCIR 68 dB CCIR 82 dB A-Weighted 80 dB A-Weighted 79 dB A-Weighted Equivalent Noise Level 23 dB CCIR 25 dB CCIR 26 dB CCIR 12 dB A-Weighted 14 dB A-Weighted 15 dB A-Weighted Maximum SPL 117 dB SPL Pad -10 dB THD 0.5% Impedance 200 Ohms Load Impedance 1000 Ohms Sensitivity 28 mV/Pa at 1 kHz into 1 kOhms 22 mV/Pa at 1 kHz into 1 kOhms 20 mV/Pa at 1 kHz into 1 kOhms General Output Connectors 1 x 3-Pin XLR Operating Current Consumption 0.8 µA Operating Voltage 48 V ± 4 V Length 7.87" / 200 mm Diameter 2.20" / 56 mm Weight 1.10 lbs / 500 g Packaging Info Package Weight 2.16 lb Box Dimensions (LxWxH) 10.1 x 4.75 x 4.0"
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