User manual SENNHEISER RI 250-J

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Manual abstract: user guide SENNHEISER RI 250-J

Detailed instructions for use are in the User's Guide.

[. . . ] RI 500 Infra-red stereo stethoset receiver, designed for use as a personal sound amplifier. It can also be used as an additional receiver for the IS 500 infra-red stereo transmission system. ADVANTAGES With cordless sound transmission, you can be independent from cables!According to current scientific knowledge, sound transmission by infra-red light poses no risk to health whatsoever. [. . . ] The BA 151 accupack must be charged for 24 hours before first use!FREE LINE OF SIGHT Infra-red light 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 or the infra-red radiator 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. 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. SPECIAL ADJUSTMENT POSSIBILITIES ON THE RI 250, RI 250-J AND RI 500 STETHOSET RECEIVERS: ADJUSTING THE BASS ATTENUATION You can use the two supplied sealing tapes to seal the small holes in the headphone systems. The more holes you seal with the sealing tapes, the greater the bass attenuation. This increases the intelligibility without increasing the volume - which is an advantage for persons with a slight hearing impairment. ADJUSTMENT FOR HEARING IMPAIRMENT Is your hearing capacity different for each ear?You can use the balance control to adjust your RI 250 (all variants) or RI 500 stethoset receiver to your individual needs. The balance control is recessed and is adjusted with a small screwdriver. This adjustment is only changed occasionally - and it is best done by the hearing aid dealer who sold you your stethoset receiver. The EZT 1011 inductively transmits the audio signal from the receiver to your hearing aid. NOTES When you connect the induction loop, the headphone systems at the RI 250-J are automatically switched off. Please first check whether your hearing aid is designed for use with an induction loop. [. . . ] This energy source can be recharged many times. Conventional batteries, on the other hand, must be disposed of as special waste after they have been used just once. If an accupack should be defective, it is then recycled - the dealer who sold it to you will take it back and will also supply you with a new, original Sennheiser accupack. Keep the receiver away from central heating radiators and electric heaters. [. . . ]

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