19
U
SING
Y
OUR
H
EADSET
Wearing it properly
Proper fit on your head is important both for comfort and good noise
reduction performance. Here are a few guidelines:
• Use the left (L) and right (R) markings above the earcups to orient
the headset properly (Figure 16).
Figure 16
Matching the R and L
markings to your right and
left ears
R
L
• Use a light grasp to adjust each earcup so its cushion is com-
pletely over your ear and you feel an even, gentle pressure all
around it.
• Adjust the headband so it rests gently on top of your head.
Make your final adjustments in a noisy environment and with the
power switch set to ON.
Conditions related to fit
A low rumbling sound or frequent brief losses of active noise reduc-
tion (ANR) may indicate an improper fit or blocked earcup ports.
Refer to “Headset Care and Maintenance” on page 25 for instruc-
tions on how to deal with a blockage.
In very loud conditions, such as during takeoff, you may experience
brief reductions in ANR as the headset compensates for a momen-
tary pressure change. If this problem continues when the sound level
returns to normal, however, refer to “In case of difficulty” on page 30.
If the problem persists, contact the Bose
®
Aviation Headset Depart-
ment for assistance.
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.
