User manual SENNHEISER IS 150

[. . . ] According to present scientific knowledge, sound transmission by infrared light poses no risk to health whatsoever. Fluorescent tubes and digital controls do not use this frequency range. Lightweight and extremely comfortable to wear - the receiver weighs only 45 g, including the rechargeable accuplug. If you take your system to a country with a different mains voltage, all you need to do is purchase the suitable plugin mains unit. [. . . ] Please also note any enclosed documents which inform you of alterations or country-specific variants. Putting the transmitter into operation Use the supplied cable to connect socket on the TI 150 / TI 300 transmitter with the headphone socket on your television set or hi-fi system. NOTE If your television set does not have a headphone socket, the sound signal can also be taken from the SCART socket (video recorder socket). Only for the TI 150 mono transmitter: For television sets without any suitable headphone sockets, the sound can also be taken directly from the loudspeaker by using the Sennheiser MKE 100 TV microphone (Cat. Connect the supplied plug-in mains unit to socket on the TI 150 / TI 300 transmitter, then plug the mains unit into the mains. Level control of the transmitter Adjust the volume of your hi-fi system or television set to a middle position. the TI 150 / TI 300 transmitter features an automatic modulation control which prevents overmodulation. Putting the receiver into operation Insert the BA 151 accuplug into compartment in the receiver. Take special note of the instructions on accuplug operation on pages 20/21 of this manual!(NB: The BA 151 accuplug must be charged for 24 hours before first use!It reproduces quiet sounds slightly louder and loud sounds slightly quieter. Adjusting your hi-fi system Read the instruction manual of your hi-fi system or television set to find out whether the volume control also works for the headphone socket, or whether this socket has a separate volume control. Replacing the ear-cushions The ear-cushions can easily be removed from the headphones and cleaned with warm soapy water . From time to time, however, the ear-cushions should be replaced for reasons of hygiene. Replacement ear-cushions are available with different degrees of softness: Black ear-cushions, firmer version Transparent ear-cushions, softer version Cat. 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. When people use headphones, they tend to choose a higher volume than with loudspeakers. [. . . ] A simple rule of thumb will help you to decide what time is necessary: 1 hour listening 3 hours recharging 2 hours listening 6 hours recharging 3 hours listening 9 hours recharging Operation with a second accuplug By using a second accuplug, you can increase the listening time with your receiver. The second accuplug is always inserted in the charging compartment of the transmitter to ensure that it is ready and fully charged when it is needed. If you use your system with only one accuplug, you must stop after about five hours and recharge the accuplug for about 15 hours in the charging compartment of the transmitter. Simply place the discharged first accuplug back into the charging compartment. [. . . ]