Beschreibung
Neumann U 87 Ai Stereo SetIncludes two U87 condenser microphones.Also included are a pair of shock mounts and a rugged, road-worthy storage case. The U 87 Ai 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. The U 87 Ai condenser microphone is a large diaphragm microphone with three polar patterns and a unique frequency and transient response characteristic.Features:Variable large diaphragm microphonePressure-gradient transducer with double membrane capsuleThe studio microphone classicThree directional characteristics: omni, cardioid, figure-8Switchable low frequency roll-offSwitchable 10 dB pre-attenuationIdeal as main and as support microphone in the most differing recording situationsTechnical Specifications:Acoustical 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 mm
