Neumann.Berlin U 87 Ai - Manual (Page 4)

Errors excepted, subject to changes • Printed in Germany • Publ. 09/07 058152/A05
Technical Data
Acoustical operating principle ............................ Pressure gradient transducer
Directional pattern ......................................... Omnidirectional, cardioid, figure-8
Frequency range ..................................................................................... 20 Hz...20 kHz
Sensitivity at 1 kHz into 1 kohm ........................................... 20/28/22 mV/Pa
1)
Rated impedance ................................................................................................. 200 ohms
Rated load impedance .................................................................................. 1000 ohms
Signal-to-noise ratio, CCIR
2) (rel. 94 dB SPL) ........................... 68/71/69 dB 1)
Signal-to-noise ratio, A-weighted 2) (rel. 94 dB SPL) ............. 79/82/80 dB 1)
Equivalent noise level, CCIR 2) .............................................................. 26/23/25 dB 1)
Equivalent noise level, A-weighted 2) .......................................... 15/12/14 dB-A 1)
Maximum SPL for THD 0.5% 3) ................................................ 117 dB (cardioid)
Maximum SPL for THD 0.5% with preattenuation 3) ........................ 127 dB
Maximum output voltage ................................................................................... 390 mV
Dynamic range of the microphone amplifier, A-weighted ............. 105 dB
Supply voltage (P48, IEC 61938) .......................................................... 48 V ± 4 V
Current consumption (P48, IEC 61938) .................................................... 0.8 mA
Matching connector ................................................................................................... XLR3F
Weight .................................................................................................................................. 500 g
Diameter .......................................................................................................................... 56 mm
Length ............................................................................................................................ 200 mm
® Neumann is a registered trademark of the Georg Neumann GmbH in certain countries.
measured in free-field conditions (IEC 60268-4), tolerance ± 2 dB
1) Omnidirectional / cardioid / figure-8 2) according to IEC 60268-1; CCIR-weighting acccording to CCIR 468-3, quasi peak; A-weighting according to IEC 61672-1, RMS 3) measured as equivalent el. input signal