User manual SONY MDR-RF800RK

[. . . ] Hearing experts advise against continuous, loud and extended play. If you experience a ringing in your ears, reduce the volume or discontinue use. This will allow you to hear outside sounds and to be considerate to the people around you. If the antenna cover come off from the transmitter, put the cover back into the transmitter. [. . . ] â· If dry batteries are installed, they cannot be charged. â· Do not attempt to use the supplied BP-HP550 rechargeable batteries for other components. The optimum distance is up to approximately 100 m without the system picking up some interference. However, the distance may vary depending on the surroundings and environment. If the system picks up some noise within the above mentioned distance, reduce the distance between the transmitter unit and the headphones, or select another channel. , The headphones' POWER indicator light turns off, dims, flashes, or sound becomes distorted or noisy. â· Charge the rechargeable batteries if it is weak, or replace alkaline batteries with new ones. If the POWER indicator is still off after charging the battery, take the headphones to a Sony dealer. Charging hours 1 hour 16 hours*2 Approx. *1 at 1 kHz, 1 mW+1 mW output *2 hours required to fully charge empty batteries *3 Time stated above may vary, depending on the temperature or conditions of use. When the transmitter is placed on or near a TV, it may pick up a noise. If the connected equipment has the AVLS (Automatic Volume Limiter System) function, be sure to turn the function off when using the transmitter. Otherwise, you will have to turn up the volume of the headphones, and that may cause noise. When you use the headphones inside the effective areas of the transmitter, the transmitter can be placed in any direction from the listener. â· Even within the signal reception area, there are some spots (dead spots) where the RF signal cannot be received. This characteristics is inherent to RF signals, and does not indicate malfunction. By slightly moving the transmitter, location of the dead spot can be changed. Loud background noise , Move closer to the transmitter. As you move away from the transmitter, more noise is likely to be heard. , If the transmitter is connected to the headphones jack , turn up the volume of the connected audio/video equipment. , Change the radio frequency with the CHANNEL selector on the transmitter, then select the same radio frequency with the switch on the right housing of the headphones. , The headphones' POWER indicator light turns off, dims, flashes, or sound becomes distorted or noisy. [. . . ] Power source DC 12 V: supplied AC power adaptor Audio input Stereo mini jack Dimensions Approx. Turn ON the switch located on the left housing of the headphone, and check the POWER indicator located on the left housing. The batteries are still serviceable when the indicator lights up red. Charge the rechargeable batteries or install new dry batteries if the POWER indicator light dims, flashes, or the sound becomes distorted or noisy. [. . . ]