User manual AKG K 28 NC

[. . . ] Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. the K 28 NC wireless headphone system is based on advanced UHF transmission technology. In order to make optimum use of the benefits of your K 28 NC, please take a few minutes to read the instructions below carefully before operating the equipment. Never try to charge dry batteries using the transmitter's charging feature. [. . . ] Before charging the headphones batteries, always make sure that the batteries in the headphones are rechargeable types. Dispose of spent dry or rechargeable batteries conforming to local waste disposal rules. Never place the equipment near heat sources such as radiators or electric heaters or expose it to direct sunlight, excessive dust, humidity, rain, temperatures below freezing, or impacts. Never use alcohol, petroleum-based cleaners, or paint thinners to clean the headphones or transmitter. AKG cannot accept any liability for damages resulting from improper handling or misuse. Connects to any audio, video, TV set, PC, or notebook computer with a headphones, line, or recording output; · Provides perfect sound reproduction, full mobility, and signal transmission through walls and ceilings over a distance of up to 100 feet/30 m (864 MHz: 330 feet/100 m) under ideal transmision conditions (free field). To share your listening enjoyment with other persons, you can operate your transmitter with several headphones simultaneously. 2 Environment If any of the above items should be missing from the package, contact your AKG dealer immediately. The AC adapter will draw a small amount of current even when the transmitter is switched off. Switch the headphones on and leave them outside the transmitter until the status LED (2) extinguishes. If you feel that you need to recharge the supplied batteries more often than would be convenient, replace both batteries with new AAA size, 1. Make sure to align the batteries with the polarity marks inside the battery compartments. After a few seconds, you should hear the signal in the headphones clearly and free of interference. If your first try fails, set the FREQ selector (9) on the transmitter to a different position and press AUTOTUNING (5) again. Transmitter has detected no signal for several minutes, headphones are not on the transmitter, charging function is off, OR transmitter is not connected to AC power. Interference caused by other users of the same frequency band is beyond AKG's control. Operating switches on or connecting the transmitter to your audio source may cause clicks which at high volume settings may affect your hearing. Therefore, be sure to set the VOLUME control on the headphones to minimum before switching between different sources (tuner, turntable, CD player, etc. [. . . ] Operating switches on or connecting the transmitter to your audio source may cause clicks which at high volume settings may affect your hearing. Therefore, be sure to set the VOLUME control on the headphones to minimum before switching between different sources (tuner, turntable, CD player, etc. Listening over headphones at high volume levels, particularly over extended periods of time, may damage your hearing. For physical reasons that have nothing to do with the quality of the product, extremely strong interference sources may affect reception. [. . . ]