Safety And Environment; Safety; High Volume - AKG PR4500 User Instructions

1. Do not spill any liquids on the equipment and do not drop any objects through the ven-
tilation slots in the equipment.
2. The equipment may be used in dry rooms only.
3. The equipment may be opened, serviced, and repaired by authorized personnel only.
The equipment contains no user-serviceable parts.
4. Operate the equipment with the included AA size dry batteries or the dry or recharge-
able batteries recommended in this manual only.
5. If any solid object or liquid penetrates into the equipment, shut down the sound system
immediately. Remove the batteries from the equipment immediately and have the equip-
ment checked by AKG service personnel.
6. Do not place the equipment near heat sources such as radiators, heating ducts, or am-
plifiers, etc. and do not expose it to direct sunlight, excessive dust, moisture, rain, me-
chanical vibrations, or shock.
7. Clean the equipment with a moistened (not wet) cloth only. Be sure to disconnect the
power supply cable from the power outlet before cleaning the equipment! Never use
caustic or scouring cleaners or cleaning agents containing alcohol or solvents since
these may damage the enamel and plastic parts.
8. Use the equipment for the applications described in this manual only. AKG cannot ac-
cept any liability for damages resulting from improper handling or misuse.
9. In some countries, you may need a permit for operating your equipment. Be sure to con-
tact the respective authority of the country where you are going to operate your equip-
ment.
10. Any modifications made to the equipment without the express consent of AKG may lead
to violations of telecommunications legislation voicing the operating permit.
• Listening over headphones at excessive sound pressure levels, particularly over
extended periods of time, may damage your hearing! Therefore, always set the
volume as low as possible.
Table 1 is based on research in occupational medicine conducted in Germany and lists max-
imum exposure times for high volume levels before hearing damage occurs. Please note
that local legislation where you will use your equipment may differ from the values in Table
1. Basically, you can double the maximum exposure time without damaging your ears by re-
ducing the sound pressure level by 3 dB.
Sound pressure
85 dB(A)
88 dB(A)
91 dB(A)
94 dB(A)
97 dB(A)
100 dB(A)
120 dB(A)
To protect your ears from damage, follow a few tips:
1. Set the volume just high enough to hear properly.
2. If you hear ringing or whistling sounds in your ears, fail to hear high notes (even mo-
mentarily), or hear less clearly for a while after a concert, you have been exposed to ex-
cessive sound pressure levels for too long. Consult an audiologist and use lower volume
levels.

1 Safety and Environment

Maximum exposure
8 hours
4 hours
2 hours
1 hour
30 minutes
15 minutes
Threshold of pain

Safety

High Volume

C C A A U U T T I I O O N N
Table 1
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