TM
®
QuietComfort Acoustic Noise Cancelling Headset
Owner's Guide
October 30, 2001
AM254864_03_V.pdf
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Uses and Reminders
TM
Your QuietComfort Acoustic
®
Noise Cancelling Headset
Thank you for purchasing the Bose® QuietComfort
Acoustic Noise Cancelling headset. Advanced design,
integrated technologies, and high quality materials
enable the headset to provide you with clearer, more lifelike
sound reception, while reducing unwanted noise.
Wearing it comfortably and effectively
Notice the marking L or R on the headband just above
each earcup. They indicate the proper position (L for left
ear, R for right) to ensure a good fit and performance.
Put the headset on and adjust it so the headband rests
gently on your head and the earcushions fit snugly (an
effective seal) and comfortably around your ears (with your
ears completely inside the ear cushions).
Remove any jewelry or earwear that affects the comfort
and fit of the headset.
Using your headset
The headset has two volume settings – Hi and Lo. These
settings are only volume levels for listening to audio and do
not impact the noise reduction technology.
For noise reduction technology only, turn the unit on Hi or
Lo and do not plug the headset into any audio source.
For audio use, begin listening in the Lo setting. Then adjust
the volume on the audio source. For more volume, try the
Hi setting. First turn down the volume on the audio source,
then switch to the Hi setting. Finally, re-adjust the volume
on the audio source.
The headset can be used with a variety of audio sources:
CD, DVD, MP3, laptop computers, and home stereo.
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AM183562_04_V.pdf
October 30, 2001
3
Uses and Reminders
Headset parts
Replaceable
earcushions
Ports
Adjustable
headband
L or R
mark
On
or low
battery light
Plug extension
Belt
clip
Plug
On/Off, Hi/Lo
controls
Stereo phone
adapter
Dual
plug adapter
Battery compartment
You may find various jack configurations on airplanes, as
depicted below. This chart will help you determine how to
connect your headset:
A single, 1⁄8" jack (and most portable sources):
use the single plug. No adapter needed.
Two 1⁄8" jacks: use the dual plug adapter.
One 1⁄8" jack and one power jack: use the single
plug in the 1⁄8" jack (the larger one). The smaller
jack does not need a connection.
Two 1⁄8" jacks and one power jack: use the dual
plug adapter for the two 1⁄8" jacks. The smaller
jack does not need a connection.
One 1⁄4" jack (for home stereos): use the 1⁄4" stereo
phone adapter.
Note: Airline audio may not equal the high quality you can
achieve with home stereo or a portable source.
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The maximum input voltage is 10 Vrms.
4
October 30, 2001
AM254864_03_V.pdf5
Uses and Reminders
Replacement parts and accessories
The following replacement parts and accessories can be
purchased by calling Bose®. See the back cover for a list
of phone numbers:
• Headband assembly
• Dual plug adapter
• Belt clip
• Drawstring carry bag
• Deluxe carry bag
• Replacement earcushion kit
• Accessory kit (adapters,
extension cord, 2 AAA batteries)
Cleaning
Be sure to keep the ports on the outside of each earcup
free from debris. Do not blow air into or vacuum the ports
or the earcups.
Use a damp, clean cloth to remove dirt or smudges
from the various headset parts. Do not allow moisture to
enter the ports or inner earcup openings.
Avoid use of sprays or chemical cleaning fluids.
Cautions
Long-term exposure to loud music may cause hearing
damage. It is best to avoid extreme volume when using
this headset, especially for extended periods.
Do not use the headset for reproducing sound when
operating a motor vehicle on a public road or where the
inability to hear outside sounds may present a danger to
the user or others.
Sounds that you rely on as reminders or warnings may
have an unfamiliar character when you are using the
headset. Be aware of how those sounds may vary in
character, so you can recognize them as needed.
Do not drop, sit on, or allow the headset to be immersed
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in water.
AM183562_04_V.pdf
October 30, 2001
5
Uses and Reminders
Earcushion reattachment
If the earcushions come off, replace them as follows:
1. Fit the plastic skirting around the rim of the earcup.
2. Make sure it attaches smoothly and uniformly around
the entire earcup. (Do not remove the earcup lining
material).
Earcushion
removal
Plastic
skirting
Earcup
Earcushions may need to be replaced due to normal
wear and tear. Replacement kits can be purchased by
calling Bose®. See the back cover of this owner’s guide
for a list of phone numbers.
Battery replacement
In this application, battery life averages 80 hours. With
the headset turned on, a flashing light on the control
box indicates a minimum of 8 hours of use remains.
When replacement is indicated, use 2 AAA alkaline
batteries (IEC LR03). Dispose of used batteries properly.
Note: Rechargable batteries can be used, averaging half
the life of alkaline (NimH are recommended). However, the
low battery indicator light is not calibrated to these
batteries and may not function properly.
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6
October 30, 2001
AM254864_03_V.pdf5
Troubleshooting
Problem
Possible Cause
Solution
• Noise reduction
absent
No power to
headset
Turn it on,
check
battery
• Low/no volume
Sound source setting Turn up
volume, set
on Hi
• Crackling noise
or intermittent loss
of noise reduction
Low batteries
Replace
batteries
• Low rumbling
Poor earcup fit,
audio ports blocked
Adjust fit,
clear ports
®
For additional help, please call Bose customer service.
See back cover for phone numbers.
Other needs
This headset is not engineered to meet the needs of pilots
or civil aviation authority standards for aviation communi-
cations.
For that purpose, Bose offers the Aviation Headset X,
which features a microphone with the appropriate power
and intelligibility for transmission of flight information. It is
engineered to withstand the altitude and temperature
conditions common in non-commercial aircraft.
For information on the Bose Aviation Headset X, contact
Bose Corporation by calling 1-800-242-9008. For calls
made from outside the United States, 1-508-766-1099.
Warranty
TM
®
The Bose QuietComfort Acoustic Noise Cancelling
headset is covered by a one-year transferrable, limited
warranty.
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AM183562_04_V.pdf
October 30, 2001
7
For Sales or Customer Service
USA & Canada
Bose Corporation, The Mountain
Framingham, MA 01701-9168
1-800-637-8781
Outside the US: 508-766-1942
United Kingdom
Freepost EX 151
Exeter EX1 1ZY
0800 614 293
Outside the UK: +44 1392 428 366
World Wide Web
Bose®, QuietComfort™ and Acoustic Noise Cancelling®
are trademarks of Bose Corporation.
©2001 Bose Corporation, The Mountain, Framingham, MA 01701-9168 USA
254864 AM Rev.03 JN11017
Printed in Taiwan
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