Monster Beats by Dr.Dre Manual And Warranty page 4

English
Listen Responsibly
To avoid hearing damage, make sure that the volume on your
music player is turned down before connecting your headphones.
After placing headphones in your ears, gradually turn up the volume
until you reach a comfortable listening level.
Noise levels are measured in decibels (dB), exposure to any noise
at or above 85 dB can cause gradual hearing loss.
Monitor your use; hearing loss is a function of loudness versus time.
The louder it is, the less time you can be exposed to it. The softer it is,
the more time you can listen to it. Refer to the chart* on the right.
This decibel (dB) table compares some common sounds and shows
how they rank in potential harm to hearing.
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English
SOUND NOISE LEVEL
(dB)
Whisper 30
Quiet Office 50–60
Vacuum Cleaner, 70
Hair Dryer
Food Blender 85–90
Garbage Truck, 100
Cement Mixer
Power Saw, 110
Drill / Jackhammer
Rock Concerts (varies) 110–140
*Chart information obtained from http://www.nidcd.nih.gov/health/education/teachers/common_sounds.asp
EFFECT
Very quiet
Comfortable hearing
levels are under 60 dB
Intrusive; interferes with
telephone conversations
85 dB is the level at
which hearing damage
(8 hrs.) begins
No more than 15
minutes of unprotected
exposure recommended
for sounds between
90–100 dB
Regular exposure to
sound over 100 dB of
more than 1 minute risks
permanent hearing loss
Threshold of pain begins
around 125 dB
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