Bose QuietComfort 2 User manual

Owner’s Guide
Brugervejledning
Bedienungsanleitung
Guía de usario
Notice d’utilisation
Manuale di istruzioni
Gebruiksaanwijzing
Bruksanvisningen
Bose®QuietComfort®2
Acoustic Noise Cancelling®
Headphones

2
EnglishEnglish
Please read this owner’s guide
Please take the time to follow the instructions in this owner’s
guide carefully. It will help you to properly use your new Bose
product and enjoy its features. Please save this owner’s guide
for future reference.
WARNINGS
• Long-term exposure to loud music may cause hearing
damage. It is best to avoid extreme volume when using these
headphones, especially for extended periods.
• Keep batteries out of reach of children.
CAUTIONS
• Do not use these headphones 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 headphones. Be
aware of how these sounds vary in character, so you can
recognize them as needed.
• Do not drop, sit on, or allow the headphones to be immersed in
water.
Please dispose of used batteries properly, following
any local regulations. Do not incinerate.
This product conforms to the EMC Directive 89/
336/EEC and to the Low Voltage Directive 73/23/EEC.
The complete Declaration of Conformity can be found on
www.Bose.com/static/compliance/index.html.
Safety Information
©2007 Bose Corporation. No part of this work may be reproduced, modified,
distributed, or otherwise used without prior written permission.

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Introducing QuietComfort®2 Acoustic Noise
Cancelling®headphones
Thank you for purchasing the QuietComfort 2 Acoustic Noise
Cancelling headphones from Bose. Advanced research and
development, innovative engineering, and integrated
technologies enable the headphones to reduce unwanted
noise and provide you with exceptional acoustic performance
in a comfortable, convenient package.
Insert the battery first, before you put on the headphones.
Wearing the headphones
As you put on the headphones, observe the markings that
identify the left (L) and right (R) earcups. Adjust the headband so
it rests gently on top of your head and the earcup cushions fit
comfortably around your ears.
Batterylight
indicator
Adjustable
headband
Battery
compartment Rotating
earcups
1/4" (6.3 mm)
Stereo phone adapter
Dual plug adapter 1/8" (3.5 mm)
Headphone plug
Headphones
cord
Extension
cord
L mark
R mark
Replaceable
earcup cushions
Ports
Power
switch
Battery
R
+–
AAA (IEC LR03)
alkaline battery
Welcome

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For noise reduction and audio
Use the supplied headphones cord to enjoy both audio and
noise reduction. Please note that the LEVEL switch on the
plug is used to adjust the output volume of different audio
sources.
1. Set the LEVELswitch on the headphones cord to
appropriate setting for your audio source.
Headphones cord
LLEVEL switch.
LO Typically used for airline audio
systems or audio devices that use
A/C power.
HI Typically used for battery-powered
audio devices (CD/DVD or MP3/
digital audio players) and personal
computers.
Note: The HI and LO settings have no affect on noise reduction.
2. Insert the headphones cord into the opening on the left (L)
earcup. Push the plug in so it is flush with the side of the
earcup.
3. Connect the headphones cord to your audio source. Refer
to “Connecting to portable and home audio devices” on
page 5.
4. Put on the headphones and turn on the power switch.
5. Use the volume control on your audio source to make
further volume adjustments.
For noise reduction only
If you plan to use them for noise reduction only, simply put on
the headphones and turn on the power switch, located on the
right earcup. The headphones cord is not required.
Using Your Headphones

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Connecting to portable and home audio
devices
The 3.5 mm plug on the headphones cord
allows you to connect your headphones to a
variety of audio devices that use a single 3.5
mm output jack such as a CD, DVD, MP3/digtal
audio player, or personal computer. Set the
LEVEL switch to HI and plug the headphones
cord directly into the 3.5 mm output jack.
To connect to a home stereo system that has a ¼ in
(6.3 mm) stereo output jack, use the the ¼ in (6.3 mm)
stereo adapter plug included with your headphones. Set the
LEVEL switch to LO. Plug the headphones cord into the
adapter plug and insert it into the output jack on your stereo
system.
Connecting to airline audio systems
The audio output connections on airline audio
systems vary, but they typically have dual or
single 3.5 mm output jacks.
Note: Airline audio may not equal the high quality audio you
experience from a home stereo or portable source.
Connecting to dual output jacks
Set the LEVEL switch to LO. Plug the
headphone cord into the dual-plug adapter
and insert it into the dual output jacks.
Connecting to a single output jack
Set the LEVEL switch to LO. Plug the
headphone cord into the adapter and
insert it into the single output jack.
The LO setting of the LEVEL switch lowers the volume
levels of strong audio output signals which are common
on airline systems. If you find that the volume level is
too low, set the LEVEL switch to HI.
Using Your Headphones

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Folding the earcups for storage
QuietComfort®2 Acoustic Noise Cancelling®headphones
feature rotating earcups that fold flat for easy, convenient
storage. The earcups rotate in one direction only.
R
L
CAUTION: Incorrectly rotating the earcups can damage the
headphones.
Reattaching earcup cushions
The earcup cushions are held in place by a mounting flange.
This flange snaps under small tabs located around the inside
rim of the earcup.
If an earcup cushion becomes partially or completely
detached, push its mounting flange back into the earcup. Then
use your finger or thumb to press around the edge of the
mounting flange, making sure it snaps into place all the way
around the earcup.
Care and Maintenance

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Battery replacement
Although it varies by usage, battery life averages 35 hours.
With the headphones turned on, the battery light indicator will
flash when there are approximately 8 hours of battery life
remaining.
When a replacement is needed, use 1 AAA alkaline battery
(IEC LR03). Tilt the top of the right earcup inward to gain
access to the battery compartment.
+–
R
Note: You can use rechargeable batteries (NiMH, composed of
nickel metal hydride, are recommended). They average half the
life of alkaline batteries. However, the low battery indicator light is
not set for such batteries and will not be a reliable indicator of
their remaining battery life.
Replacement parts and accessories
You can purchase accessories from your Bose dealer, on the
internet (www.Bose.com), or by placing an order over the
phone. See the inside back cover for contact information.
• Dual plug adapter
• Headphones cord
• 1.5 m extension cord
• 6.2 m extension cord
• Deluxe carry case
• Replacement ear cushion kit
• Accessory kit (includes
adapters, extension cord, and
two AAA batteries)
• QC2 Cell Connect Accessory
Kit
Care and Maintenance

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Cleaning the headphones
Scheduled cleaning is not required. However, you can simply
wipe the outside surfaces with a damp cloth, as needed. Also,
be sure that the earcup ports are clear and that no moisture is
allowed into the earcups.
Troubleshooting
Problem What to do
No noise reduction • Turn on the headphones
•Checkbattery
Low or no volume • Turn source volume up
• Set LEVEL switch to HI
• Check headphones cord connection at
the source and the earcup
Crackling noise;
intermittent loss
of noise reduction
• Replace the battery
Low rumbling • Adjust how the headphones fit on your
ears
• Make sure earcup ports are clear
Volume too high • Turn source volume down
• Set LEVEL switch to LO
Care and Maintenance

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Aviation Communication Headset Needs
While QuietComfort®2 headphones are designed for
passenger use in air transport aircraft, they are not engineered
to meet the needs of pilots or to meet civil aviation authority
standards for communication headsets.
WARNING: Except in case of emergency, Bose recommends
that you NOT use these headphones as aviation communication
headsets because:
• No incoming audio will be heard with a discharged or
improperly installed battery. This could result in the potential
of missed communications while piloting an aircraft.
• Extremely loud ambient noise levels that are common to
many propeller-driven aircraft may impair the user’s ability to
receive incoming audio communications, particularly during
takeoff and climb out when noise levels are high.
• The QuietComfort 2 headphones are not engineered for the
altitude, temperature or other environmental conditions
common in non-commercial aircraft, resulting in possible
interference to critical communications.
For pilots, Bose offers a communication headset which is
specifically designed to meet or exceed civil authority
standards. It features a microphone with the appropriate power
and intelligibility for transmission of flight information. It is also
engineered to withstand the altitude and temperature
conditions that are common in non-commercial aircraft.
For more information on products for pilots, please contact
Bose Corporation using the information supplied on the inside
back cover of this owner’s guide.
Reference

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World Wide Web
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Bose Corporation

©2007 Bose Corporation, The Mountain,
Framingham, MA 01701-9168 USA
AM257565 Rev.02