Maintenance; Safety - Beyerdynamic DT 150 Operating Instructions Manual

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 the breath stream, therefore minimising
any 'pop' sounds. Of course every user will be different and a
degree of experimentation will be necessary to achieve the
preferred result. Professional users should note that it is
recommended practise that headsets are issued on an individual
user basis to preclude any possible health risks.

Maintenance

As with any equipment which will be used in close
proximity to sensitive parts of the body, it is essential that the
ear pads, the headband and the microphone pop-shield are
kept clean. Use a damp cloth for cleaning the ear-pads and
headband using only gentle cleansing agents (such as washing-
up liquid). Take care not to allow any water drops into the
transducer elements and do not use any solvent cleaners.
The microphone pop-shield of the headset can be easily
removed and washed in warm water. Please take care that the
pop-shield is completely dry when it is replaced.
The fully modular design of the DT 150 and DT 190 allows for
full, in-field serviceability without the need for specialists tools.
Every item of the assembly is available as a spare part and no
special training is necessary for servicing. The Order Numbers of
all of the spare parts are listed under "Spares", "Supplied
Accessories" and "Optional Accessories". Please take care to
identify the parts required by the Order Number as there are
many options, especially for the transducer parts and the cable
assemblies.

Safety

When plugging in headphones or headsets to the drive
amplifier, we recommend that this is done before it is fitted
over the ears for use. This will give the technician the chance to
check that the volume levels are not too high. Please remember
that the user could well be a highly-paid presenter and the con-
sequences of damaging his/her ears may well prove to be music
to the ears of the lawyers!
The very low levels of distortion can make listening levels hig-
her than is perceived and we have to warn you that listening to
programme or talkback at high levels for long periods can
permanently damage your hearing.
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