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Quiet, intermittent or poor sound quality from one speaker
If one of the speakers in your product cuts in and out, is of low volume or produces poor sound quality, try the following:
Be sure the headphone openings are clean and free of debris.
Check for blockages in the headphone mesh grille and headphone opening. Excessive debris can result in low audio, poor sound quality or missing audio channels.
Be sure the access cover and the down cable are connected properly to the earcups.
Make sure the access cover has been installed correctly. It should sit flush with the earcup housing. Make sure no pins are bent inside the connector—this could prevent audio and ANR in that ear. Also, switch sides with the down cable and access cover. If the issue switches sides, try a new access cover.
Determine if any recent changes have been made to the headset or aircraft.
If any changes or modifications have been made to either the headset or the aircraft, look into whether or not those changes could have unexpectedly caused this issue.
Connect the headset to a different panel jack or, if possible, to another aircraft.
Non-TSO equipment, worn jacks/loose connections, or incorrectly wired jacks (i.e. reversed stereo or mic / ground wires) in the aircraft can cause issues. If available, try connecting the headset to another jack in the aircraft or to jacks in a separate aircraft. If the headset works fine when connected elsewhere, the panel jack or wiring to the jack is the issue.
For 6-pin aircraft-powered installed connections, check the condition of the plug on the headset and the jack on the aircraft.
Check for any debris in the connector on the aircraft and check if any of the six pins are missing inside the headset plug.
Note: If the aircraft has a jack for an older model Bose AHX headset that was wired to provide mono audio to the right earcup, the jack will need to be rewired since the electronics in the newer A20 cable differ.
Note: If the aircraft has a jack for an older model Bose AHX headset that was wired to provide mono audio to the right earcup, the jack will need to be rewired since the electronics in the newer A20 cable differ.
Replace worn ear cushions.
The issue may be caused by the lack of a proper seal by the ear cushions around the ear. Also check to be sure the cushions are securely attached to the earcup. Replacing worn ear cushions will aid in comfort, the performance of the active noise reduction and battery life
Plug in a different headset.
If available, connect a different headset to the aircraft to determine if the issue is related to the aircraft panel or its settings.
Your product may need service.
If the steps provided do not resolve your issue, your product may need service. Follow the link below for more information on how to service your product. Depending on your product and region, you will be provided a contact number or the ability to setup service online.
Click here to start service
Click here to start service