Neumann.Berlin U 67, Operating Manual, Page: 9 / 20

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4. Delivery includes
U 67 set
• Microphone U 67
• Power supply NU 67 V
• Elastic suspension Z 48
• cable UC 5
• Mains cable
• Quick guide
• Safety guide
5. Getting Started
Mounting the microphone
Attach the microphone to a stable, sturdy stand.
Use an elastic suspension, for the mechanical
suppression of structure-borne noise.
For this purpose set the microphone into the inner
cage from above, and secure it to the inner cage
with the two latches.
If required, use a windscreen or popscreen from
our range of accessories in order to suppress
wind or pop noise.
Connecting the microphone
Caution: An incorrect power supply can
damage the microphone!
Attach the microphone only to the included
NU 67 V power supply unit with the UC 5 cable.
When hooking up the microphone, the order in
which the cables are connected does not matter.
Only then, the power supply may be switched on.
When connecting the cables, ensure that the con-
nectors are locked correctly.
Within a few minutes, at the latest, the tube in the
U 67 reaches its stable operating condition and
then evidences its low residual noise level. Exter-
nal phantom power, if present, does not detract
from the performance of the U 67.
Caution: Very loud noise can damage loud-
speakers or your hearing!
Minimize the volume of connected playback
and recording equipment before connecting the
microphone.
Using a suitable cable, connect the power supply
to the microphone input of the audio equipment
to be used for subsequent processing.
Gradually increase the volume of the connected
equipment
Set the gain of the connected equipment so that
no distortion occurs at the highest sound pressu-
re level.
To avoid any electrical shocks, never touch any
connector contacts when the power supply is
switched on.
In any case, the 210 V dc voltage at pin 5 is charge
limited and thus not dangerous.
Suppressing noise interference
The frequency response of the U 67 extends to
very low frequencies. The microphone is of course
correspondingly sensitive to low-frequency inter-
ference such as structure-borne noise and wind or
pop noise. Depending upon the situation, the use
of an elastic suspension, a windscreen and/or a
popscreen is therefore recommended.
Function test
Simply speak into the microphone. Do not blow
into the microphone or subject it to pop noise,
since this can easily result in hazardous sound
pressure levels.