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For internal and reseller distribution only Bose confidential.
CC013997 QC25 FAQ 5.6.14
13
Bose
®
QuietComfort
®
25
Acoustic Noise Cancelling
®
headphones
Do the QuietComfort 25 Acoustic Noise
Cancelling headphones reduce more
noise than the original QuietComfort
headphones?
Yes. Earlier versions of QuietComfort headphones all provided essentially
the same level of noise reduction. The QuietComfort 15 headphones
improved active noise cancelling and passive attenuation for a significant
improvement in the amount of noise reduction. The QuietComfort 25
headphones make improvements to the total noise reduction mainly at
low frequencies.
Do the enhanced QuietComfort 25
Acoustic Noise Cancelling headphones
deliver better audio reproduction than
the earlier versions of QuietComfort
headphones?
Since their introduction in 2000, the audio performance of the
QuietComfort headphones has been periodically improved for more
lifelike audio reproduction. The champagne-colored QuietComfort 2
headphones, introduced in 2003, dramatically reduced the electronic
hiss/noise floor of the original version. The silver-and-chrome QuietComfort
2 headphones, introduced in 2005, included a subtle refinement that
affects the full audio spectrum, with the most noticeable improvement in
the higher-frequency range. The QuietComfort 15 headphones
maintained this acclaimed audio performance, while the noise reduction
was significantly improved. The QuietComfort 25 headphones continue to
improve the audio performance with a smoother and more balanced
audio response.
Do the QuietComfort 25 Acoustic Noise
Cancelling headphones deliver better
audio reproduction than Bose
®
audio
headphones?
Yes. Although all of our consumer headphones utilize TriPort
®
acoustic
headphone structure which enables a bass response not commonly
found in headphones QuietComfort 25 headphones utilize Active EQ to
closely match the Bose target curve for headphone audio. In addition,
the noise reduction technology allows you to enjoy your music with less
distraction from noise around you; you can hear more without having to
turn up the volume.
I am a pilot; can I use the QuietComfort
25 Acoustic Noise Cancelling
headphones to fly?
No. These headphones do not include features that would be required to
meet the needs of pilots, nor do they meet FAA standards for aviation
communication. The Bose A20
®
Aviation Headset is designed exclusively
to meet these needs. For further information on the A20
®
Aviation
Headset, contact Bose Corporation at 1-800-444-BOSE.
Are the QuietComfort
®
25 Acoustic Noise
Cancelling
®
headphones appropriate for
industrial use as a hearing-protection
device?
No. The QuietComfort 25 headphones were not designed for use in
industrial situations requiring hearing protection. Tests that should be
performed on such a product, such as making sure the product is not
damaged by chemicals or solvents, have not been done. The audio
cable could become tangled in machinery, posing a safety hazard.
Finally, the noise reduction rating (NRR) as defined by the government
cannot be measured for this product because the test method specified
by law is generally recognized to be inaccurate when applied to active
devices.
13


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