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©2006, Shure Incorporated 1 Printed in U.S.A
27D8791 (Rev. 9)
ENGLISH
It is difficult to measure the exact Sound Pressure Levels (SPL) present at the eardrum, since
the SPL in the ear is affected by ambient sound from floor wedges or other devices in addition
to the volume setting on the PSM. The isolation provided by the fit of quality earphones is
also an important factor in determining the SPL in the ear.
Here are some general tips to follow for safe use of this product:
1. Turn up the volume control only far enough to hear properly.
2. Ringing in the ears may indicate that the gain levels are too high. Try lowering
the gain levels.
3. Shure recommends that you have your ears checked by an audiologist on a regular
basis. If you experience wax buildup in your ears, stop using the earphones until an
audiologist has examined your ears.
4. Wipe the earphones with an antiseptic before and after use to avoid infections.
Stop using the earphones if they are causing great discomfort or infection.
WARNING!
USING THIS SYSTEM AT EXCESSIVE VOLUMES
CAN CAUSE PERMANENT HEARING DAMAGE.
USE THE LOWEST VOLUME LEVEL POSSIBLE.
To use this system safely, avoid prolonged listening at excessive sound pressure levels.
Please use the following guidelines established by the U.S. Occupational Safety Health
Administration (OSHA) on maximum time exposure to sound pressure levels before hear-
ing damage occurs.
90 dB SPL at 8 hours
95 dB SPL at 4 hours
100 dB SPL at 2 hours
105 dB SPL at 1 hour
110 dB SPL at
1
/
2
hour
115 dB SPL at 15 minutes
120 dB SPL - avoid or hearing damage may occur