Sennheiser IS 150 300 User Manual download pdf (Page 19)

Front

Free line of sight

Infra-red light from the TI 150 / TI 300 transmitter is transmitted in the

same way as the light from a light bulb. Do not obstruct the path of the light

between the transmitter and the receiver, and stay in the room where the

transmission is taking place! Make sure that you wear the stethoset receiver

the right way round, with the „Sennheiser“ logo at the front.

There is a simple rule:

If you can see the transmitter from where you are,

transmission can take place without any interference.

Volume up? – No!

When people use headphones, they tend to choose a higher volume than

with loudspeakers. Listening at high volume levels for long periods can lead

to permanent hearing defects. Please protect your hearing, Sennheiser

headphones have an excellent sound quality even at low volumes.

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Sennheiser IS 150 300 User Manual Page 19