Monster Turbine Copper Pro Advanced Professional In-Ear Speakers with ControlTalk - Manual (Page 6)

5
SoUND NoISE LEVEL
(dB) EFFECT
Whisper 30 Very quiet
Quiet Office 50-60 Comfortable hearing levels
are under 60 dB
Vacuum Cleaner, Hair Dryer 70 Intrusive; interferes with
telephone conversations
Food Blender 85-90 85 dB is the level
at which hearing
damage (8 hrs.) begins
Garbage Truck, Cement
Mixer 100 No more than 15 minutes
of unprotected exposure
recommended for sounds
between 90-100 dB
Power Saw, Drill/
Jackhammer
110 Regular exposure to sound
over 100 dB of more than
1 minute risks permanent
hearing loss
Rock Concerts (varies) 110-140 Threshold of pain begins
around 125dB
*Chart information obtained from http://www.nidcd.nih.gov/health/education/teachers/common_sounds.asp