Headphones User Manual
13
Tab 6, 14
English Tab 2, 10 Tab 3, 11 Tab 4, 12 Tab 5, 13
Tab 8, 16Tab 7, 15
USING THE HEADSET
Wearing and adjusting the headset
Proper fit on your head is important both for comfort and optimal noise 
reduction performance. Here are a few guidelines:
• Use the left (L) and right (R) markings above the earcups to orient the headset 
properly. 
• As you put the headset on, lightly grasp each earcup and adjust it so its 
cushion is completely over your ear. You should feel an even, gentle pressure 
all around each ear. 
• Adjust the headband so it rests gently on top of your head.
Make your final adjustments with the headset powered on in a noisy 
environment. 
In very loud conditions, such as during takeoff, you may experience a brief 
reduction in Acoustic Noise Cancelling
®
 as the headset compensates for a 
momentary pressure change. If the problem continues when the sound level 
returns to normal, see “In case of difficulty” on page 27. If the problem persists, 
contact Bose
®
 Technical Support for assistance.
Conditions related to fit
A low rumbling sound or frequent, brief losses of Acoustic Noise Cancelling 
noise reduction may indicate an improper fit or blocked earcup ports. See 
“Headset earcup openings” on page 23 for instructions on removing 
blockages.
During a long flight, you may feel a slight pressure point, which can be relieved 
by adjusting the headband position. Your experience with using the headset will 
help establish a sense of how it should sound and feel.
Microphone placement
Microphone placement is important for clear communications. With the 
headset on your head, make these adjustments:
R 
L 
00_Cavu.book Page 13 Wednesday, April 25, 2012 10:10 AM










