Bose 29354 User Manual - Page 4

Use Using your headphones If you plan to use them for noise reduction only, simply put on the headphones and turn on the power switch, located on the right earcup. There are no cable connections required for this use. To use the headphones for audio, first notice the settings on the audio attenuator shown below. L Hi/Lo switch These Hi and Lo settings are used to adjust the output volume of different audio sources. "Lo" is typically used for airline audio or audio devices that use A/C power. "Hi" is typically used for battery-powered audio devices. Note: Hi and Lo settings have no effect on noise reduction. Select the appropriate setting for the sound source you will use. Then insert the audio attenuator into the opening on the left (L) earcup and press it in so it is flush with the side of the earcup. As soon as you connect the headphone plug to your audio source, you are ready to put on the headphones and turn on the power switch to enjoy both audio and noise reduction. Use the volume control on the selected audio source to make additional volume adjustments. AM257565_00 _V.pdf May 13, 2003 4