Neumann.Berlin U 67, Operating Manual, Page: 10 / 20

EN EN
10
6. Shutdown and Storage
Before switching off the microphone or discon-
necting the cables, reduce the volume of con-
nected equipment.
Disconnect the power supply from the mains vol-
tage by switching the supply off.
Disconnect the cables.
When disconnecting a cable, always pull only on
the connector and not on the cable itself.
Microphones which are not in use should not be
allowed to remain on the stand gathering dust. A
microphone which is unused for a prolonged pe-
riod should be stored under normal atmospheric
conditions, and should be protected from dust.
For this purpose, use a lint-free, air-permeable
dust cover or the original packaging of the micro-
phone.
7. Configuration of the Microphone and
Power Supply Outputs
The 7 pin connector of the microphone and the
corresponding connector of the power supply unit
have the following configuration:
Pin 1:
audio signal (+phase)
Pin 2: audio signal (–phase)
Pin 3: housing
Pin 4: –6,3 V DC
Pin 5: +210 V DC
Pin 6: –
Pin 7: ground
1
2
6
3
5
4
7
Stecker
Buchse
7
5
3
1
4
2
6
Anschlussseite
Connector
pin view
female male
The included seven-core UC 5 cable connects the
microphone to the power supply unit NU 67 V.
At the power supply unit, the audio signal is
available at a 3-pin XLR socket which requires an
XLR 3 F connector. The microphone is wired as
per IEC 60268-4:
An increase in sound pressure at the microphone‘s
front diaphragm produces a positive voltage at
pin 2.
8. Microphone Cables
The following cables are available for the U 67:
UC 5 (10 m) .............blk ................ Cat.No. 008680
(included in the supply schedule)
Cable for U 67, with double twist (double helix)
braiding as shield. Ø 5 mm, length 10 m. Special
7-pin connectors (equivalent to types T3460-10
and T3461-10).
IC 3 mt ....................sw ................. Cat.No. 006543
Microphone cable with double twist (double helix)
braiding as shield. Ø 5 mm, length 10 m. XLR 3
connectors, matte black.
Custom-made cables are available on request.
The length of the 7-core microphone cable should
not exceed
50 m
. Otherwise the self noise level of
the microphone would rise due to a too low hea-
ting voltage.
The length of the complete signal path should not
exceed
300 m
. Otherwise the upper frequency
range would be affected by the capacitance of the
cable.