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Noise cancellation is not working | Bose QuietComfort Ultra Headphones
Do you hear static or distorted audio while in noisy environments?
In very loud settings—such as airplane takeoffs, concerts, emergency sirens, or construction zones—your headphones' noise-cancelling microphones can become overwhelmed, which may cause brief crackling or distortion. This can happen even in Quiet or Aware mode.
It’s similar to when someone talks too loudly into a phone—the sound gets distorted until they lower their voice. Your headphones react in the same way to intense external noise.
This is normal and doesn’t damage the product. To reduce it, try moving away from the loud source when possible. For example, on a plane, sitting farther from the engines can help.
Move away from any hard surfaces.
Reflected sound (caused by using the headset close to a hard surface – like a wall) will negatively affect noise cancellation.
Try a different noise cancelling level.
You can adjust the noise cancellation levels in the Bose app from 0 (least cancelling) to 10 (most cancelling). Try different levels and see if the noise cancellation is improved
Check for and install any available product updates.
On a computer, visit btu.bose.com and follow the instructions to ensure your product has the latest features and enhancements. See Checking the software or firmware version and Updating the software or firmware of your product.
Be sure the earcups are tightly seated against the head.
Glasses, earrings and hats may prevent the headphone cushions from forming a tight seal around the ear. Remove any of these items and retest the noise cancelling feature.
Be sure the cushions are securely attached to the earcup.
If the ear cushion is not affixed to the ear cup properly, the noise reduction or sound quality may be affected. For more information, see Replacing the ear cushions.
Reboot your headphones.
This reset will not erase your product settings.
- If the USB charging cable or audio cable is connected to your headphones, disconnect it.
- Connect a USB charging cable and charger to a power outlet. You can also connect the USB cable to a USB port on a computer that is powered on.
Note: Do not connect your headphones to the USB cable yet. - On your headphones, press and hold the Power/Bluetooth® button.
- While continuing to hold the button, connect the USB cable to the left earcup. The Power light on your headphones will quickly blink twice.
- Once connected, wait two seconds and then release the Power/Bluetooth button.
Tip: If your headphones don't respond after this, reset them a second time.
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