ADVISORIES
Headset earcup requirements
Proper headset operation requires that the headset TriPort® openings on the earcup are kept free of debris. The headset TriPort openings are located on the outside of each earcup and include two holes and a screen.
TriPort opening
Microphone 
opening
Earcup inner screen
The protective inner screen is critical to the headset’s performance.
Earcup inner screen
Do not attempt to remove, replace, or repair this screen. If screen replacement seems necessary, contact Bose® Technical Support. See “Contact information” on page 37.
If the screen gets wet or any foreign objects become lodged on or adjacent to it, follow the instructions in “Headset Care and Maintenance” on page 23.
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