Bose Aviation Headset X Руководство пользователя - Страница 19

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Figure 16

Matching the R and L

markings to your right and

left ears

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).

• 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

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.

AM270261_00 V.pdf May 16 2003

Using Your Headset

Aviation Headset Depart-