Operation - Beyerdynamic DT 250 Bedienungsanleitung

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 headset is designed for balanced
connection. But it can be also connected to unbalanced microphone inputs.
The DT 291 PV or DT 297 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 280 / DT 290 V.11 or DT 287 / DT 297 V.11 headset with integrated
preamp 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:
6 V
12 V
20 V
27 V

4. Operation

The head phones are fully adjustable and should be positioned for the best fit
over the ears. This will give maximum long-term comfort and will minimise
sound leakage or spill.
The microphone should be positioned to the side of the mouth, about
20 - 30 mm forward. This will keep it within the direct sound path but out of
breath stream, therefore minimising any 'pop' sounds.
All versions:
The microphone boom is rotatable so that the
microphone can be placed over the left or right
ear.
R vor 330 Ω
R vor 330 Ω
R vor 330 Ω
R vor 330 Ω
DT 290 V.11
8 mA
23 mA
43 mA
61 mA
DT 297 V.11
6 mA
20 mA
40 mA
57 mA
17