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QuietComfort® 15 Acoustic Noise Cancelling® headphones

Sold from 2009 - 2014

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Setting the audio attenuation Hi/Lo switch

The Hi/Lo switch on your headset cable is used to reduce the volume of the device your headset is plugged in to. This is useful if the device output is too loud and causes distortion or if you can't turn the device volume low enough for a comfortable listening level.

To change the Hi/Lo audio attenuation switch:

  1. Power off your headphones
  2. Disconnect the cable from the headphones
  3. On the cable connector for the earcup, set the Hi/Lo switch to Hi or Lo
  4. Reconnect the cable to the headphones.
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