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Using the control module power and volume controls | Bose A20 Aviation Headset with Bluetooth
Power button
Use the power button to turn noise cancelling on or off, and control indicator brightness
Volume control
The left and right volume control wheels on the control module adjust the volume of the corresponding earcup. With noise cancelling off, volume control will be set to the maximum level. Overall headset volume control requires adjustments at both the aircraftintercom or radio and at the headset control module. Even at its lowest setting, neither volume control wheel can completely turn off the intercom audio.
- Press the power button once to turn on the noise cancelling function
- Press and hold the power button to turn off the noise cancelling function
- Press the power button twice rapidly to toggle between the dim and bright LED settings
Volume control
The left and right volume control wheels on the control module adjust the volume of the corresponding earcup. With noise cancelling off, volume control will be set to the maximum level. Overall headset volume control requires adjustments at both the aircraftintercom or radio and at the headset control module. Even at its lowest setting, neither volume control wheel can completely turn off the intercom audio.