Neumann.Berlin USM 69 i Manual De Usuario

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Stereo Microphones
Polar patterns SM 69 fet
In addition to the usual directional polar pat-
terns: omnidirectional, cardioid, and figure-8,
we have added six intermediate positions.
The narrower characteristics
suppress sound from the side
more efficiently, while the
wide-angle polar patterns are
especially useful to record
large sound sources.
The directional patterns are
selected remotely from the po-
wer supply unit. Two rotary
switches are used to switch
between nine different polar
patterns for each system.
The rotary switches are mark-
ed in color and numbered
corresponding to the respective microphone
capsule.
The NS 69 i power supply unit is available for
AC mains supply.
Polar patterns USM 69 i
As a major difference, when compared with the
SM 69 fet, the USM 69 has two built-in rota-
ry switches. The five polar patterns of both
capsules can be selected at the microphone it-
self. Therefore, no special AC power supply
units or powering adapters are
necessary.
The two outputs attach di-
rectly to any 48 V phantom
powered connectors.
In addition to the usual polar
patterns: omnidirectional, car-
dioid, and figure-8, we have
added a hypercardioid and a
wide-angle cardioid pattern.
A built-in DC converter gene-
rates the required capsule po-
larizing voltages.
Electrical features
The amplifiers feature high output capability
and extremely low self noise. Distant sound
sources, as well as very loud sound sources at
close range can therefore be recorded without
any problem.
Each amplifier has an active filter. It effectively
suppresses subsonic interference as caused by
wind or structure borne noise. At the same
time, the filter prevents the output transfor-
mers from overloading through very low fre-
quency energy.
USM 69 i
SM 69 fet
Technical Data
SM 69 fet
USM 69 i
Acoustical operating principle ............................................................................... Pressure gradient transducer ............................................................... Pressure gradient transducer
Directional pattern ........................................................................................... Omnidirectional, cardioid, figure-8 ............................................. Omnidirectional, wide angle cardioid,
with 6 intermediary positions
cardioid, hypercardioid, figure-8
Frequency range ........................................................................................................................................ 20 Hz...20 kHz ........................................................................................... 20 Hz...20 kHz
Sensitivity at 1 kHz into 1 kohm .................................................................................................................. 19 mV/Pa ........................................................................................................ 13 mV/Pa
Rated impedance ................................................................................................................................................. 200 ohms ........................................................................................................ 150 ohms
Rated load impedance ................................................................................................................................... 1000 ohms .................................................................................................... 1000 ohms
Equivalent SPL CCIR 468-3 ..................................................................................................................................... 24 dB ................................................................................................................. 24 dB
Equivalent SPL  DIN/IEC 651 ........................................................................................................................... 13 dB-A ............................................................................................................ 13 dB-A
S/N ratio CCIR 468-3 .................................................................................................................................................. 70 dB ................................................................................................................. 70 dB
S/N ratio DIN/IEC 651 .............................................................................................................................................. 81 dB ................................................................................................................. 81 dB
Maximum SPL for THD 0.5% .............................................................................................................................. 123 dB .............................................................................................................. 132 dB
Maximum output voltage ..................................................................................................................................... 532 mV ......................................................................................................... 1100 mV
Dynamic range of the microphone amplifier DIN/IEC 651 .............................................................. 110 dB .............................................................................................................. 119 dB
Supply voltage ...................................................................................................................................................... 48 V ± 4 V ...................................................................................................... 48 V ± 4 V
Current consumption ....................................................................................................................................... 2 x 0.6 mA ..................................................................................................... 2 x 0.7 mA
Matching connector .............................................................................................................................................. DIN 12 F .............................................................................................................. XLR 5F
Weight .................................................................................................................................................................................. 465 g ................................................................................................................. 510 g
Diameter ............................................................................................................................................................. 30 + 48 mm ................................................................................................ 30 + 48 mm
Length ............................................................................................................................................................................. 260 mm ........................................................................................................... 293 mm