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18
The Basics
listening safely
To protect your hearing, follow these guidelines
when you use headphones.
• Adjust
VOL
(volume) to its lowest level before
VOL
VOL
putting on headphones. With the headphones
on, adjust
VOL
to a comfortable level.
VOL
VOL
• Avoid increasing the volume once you set
it. Over time, your sensitivity to volume
decreases, so volume levels that do not cause
discomfort might damage your hearing.
• Avoid listening at high volume levels.
Prolonged exposure to high volume levels can
cause permanent hearing loss.
traffi c safety
Do not wear headphones while driving. This can
create a traffi c hazard and is illegal in some areas.
Even though some headphones let you hear
outside sounds when you listen at normal levels,
they still can present a traffi c hazard.
Summary of Contents for 20-427 PRO-2054
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