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Connection
The DT 250 / DT 252 headphones or the DT 280 / DT 290 /
DT 290 V. 11 / DT 291 PV / DT 294 PV / DT 294 V.11 headsets are
delivered with a single-sided, plug-in type connecting cable. In
addition to this, special cables can be ordered. Direct solder
connections can be made to all cables with free ends (for cable
connection refer to ”Block Diagram”). Upon request the
required plugs can be connected at the factory.
It is important that the external equipment the DT 250 / DT 252
studio headphones or the DT 280 / DT 290 / DT 290 V.11 / DT 291 PV
/ DT 294 PV / DT 294 V.11 headsets will be connected to are of
good quality and of the correct impedance and power ratings
to get the best performance from them. Please refer to the
”Technical Specifications” for detailed information.
The microphone of the DT 280 / DT 290 / DT 290 V.11 headset is
designed for balanced connection. But it can be also connected
to unbalanced microphone inputs.
The DT 291 PV or DT 294 PV headsets are suitable for the
connection to balanced microphone inputs with phantom
power. At a distance of 5 cm the microphone level is 13 mV or
250 mV.
Use the DT 290 V.11 / DT 294 V.11 headset with integrated pre-
amp for connecting to TV cameras with a microphone input for
AB-powering. At a distance of 5 cm the microphone level can
be adjusted between 52 mV and 1.3 V at normal speech
volumes. The supply voltage for the pre-amplifier can vary
between 6 - 27 V. The power consumption is at:
DT 290 V.11 DT 294 V.11
6V R
vor
330
Ω 8 mA 6 mA
12 V R
vor
330 Ω 23 mA 20 mA
20 V R
vor
330 Ω 43 mA 40 mA
27 V R
vor
330 Ω 61 mA 57 mA