This was the first version of the U87 which can operate on phantom power or from internal batteries. The result is a higher sensitivity of 10 dB for identical sound pressure levels, and an improved signal-to-noise ratio of 3 dB.įrom an eBay seller’s description: “This is the original Neumann U87, serial number 21773. 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. Modifications apply to the electronic components of the microphone only the capsule remains unchanged. The letter A in the name indicates a more recent generation, as compared to the U 87 i mics that were built from 1967 to 1986. By means of a high-pass filter, interferences through subsonic and low frequencies are reduced remarkably. The microphone can be used very close to a sound source without the sound becoming unnaturally harsh. The frequency response of the cardioid and figure 8 directional characteristics are flat for frontal sound incidence, even in the upper frequency range. The U 87 is addressed from the front, marked with the Neumann logo. 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. It is a good choice for most general purpose applications in studios, for broadcasting, film and television. Users recognize the microphone immediately by its distinctive design. The U 87 Ai condenser microphone is a large diaphragm microphone with three polar patterns and a unique frequency and transient response characteristic. Furthermore, the low-frequency response can be reduced to compensate for proximity effect. It enables the microphone to handle sound pressure levels up to 127 dB without distortion. A 10 dB attenuation switch is located on the rear. These are selectable with a switch below the head grille. It is equipped with a large dual-diaphragm capsule with three directional patterns: omni-directional, cardioid and figure 8. The U 87 is probably the best known and most widely used Neumann studio microphone. Hear an acoustic guitar recorded with this mic. Hear a voice recording made with this mic. Your browser does not support the audio element. Multi-directional condenser microphone Scroll down part of the way to see the U 87.
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