LG OPTIMUS L9 Quick Reference Manual page 64

Safety
62
might cause unsafe volumes to sound
normal.
Do not listen at any volume that causes
●
you discomfort. If you experience
ringing in your ears, hear muffl ed
speech or experience any temporary
hearing diffi culty after listening to your
portable audio device, discontinue use
and consult your doctor.
You can obtain additional information on this subject
from the following sources:
American Academy of Audiology
11730 Plaza American Drive, Suite 300
Reston, VA 20190
Voice: (800) 222-2336
Email: info@audiology.org
Internet: www.audiology.org
National Institute on Deafness and
Other Communication Disorders
National Institutes of Health
31 Center Drive, MSC 2320
Bethesda, MD USA 20892-2320
Voice: (301) 496-7243