Neumann U87AI Variable Pattern Microphone

The U 87 is probably the best known and most widely used Neumann studio microphone. Users recognize the microphone immediately by its distinctive design. It is a great choice for most general purpose applications in studios, for broadcasting, film and television. 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 Head grille. 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. 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.

Variable large diaphragm microphone

Pressure-gradient Transducer with double membrane capsule

Three directional characteristics: omni, cardioid, figure-8

Switchable low frequency roll-off

Switchable 10 dB pre-attenuation

Ideal as main and as support microphone in the most differing recording situations

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/Pa

Rated impedance 200 Ohms

Rated load impedance: 1000 ohms

Equivalent SPL CCIR 468-3 26/23/25 dB

Equivalent SPL DIN/IEC 651 15/12/14 dB-A

S/N ratio CCIR 468-3 68/71/69 dB

S/N ratio DIN/IEC 651 79/82/80 dB

Dimensions: 2.2" Diameter x 7.8" Long

Weight: 1.1 lbs