Technical information

16
Using the Bose
®
Aviation Headset X
Operating the battery powered headset (cont.)
Volume control
Control of the volume level of the Bose Aviation Headset X requires
adjustments at both the aircraft intercom or radio and at the headset
control module. Avoid setting the volume levels too high. Exposure to
loud sounds may cause hearing damage.
Note: The headset volume control cannot completely turn off the
volume.
The headset volume control is located on the control module, as
shown in Figure 5. The volume at each earcup is controlled indepen-
dently. Adjust the volume as follows:
• Push-in and release the knob. It will pop up from the
control module.
• To increase the volume for the earcup with the boom
microphone cable attached, rotate the knob clockwise.
• To increase the volume for the other earcup, gently pull-out
the knob until you feel a click, and rotate the knob
clockwise.
To secure the earcup volumes at the selected levels, push-in the knob
flush to the control module.
Volume control using multiple headsets
When an aircraft has more than one headset connected to its audio
system, the pilot in command should adjust the volume of his/her
Bose Aviation Headset X as follows:
1. Turn off active noise reduction by setting the power
switch to OFF.
2. Set the volume on both earcups to maximum.
3. Adjust the aircraft intercom or radio master volume to hear
communications clearly. This should be done in noise.
Adjust the headset volume controls only to balance the
volume between the left and right earcups.
4. Turn the headset ON.
5. Turn down the aircraft intercom or radio master volume to
the desired listening level.