15
IMPORTANT NOTES
Hearing is very important to you and to us so please take care when operating this equipment. It is strongly
recommended that you follow the listed guidelines in order to prevent possible damage or loss of hearing.
ESTABLISH A SAFE SOUND LEVEL
•
Over time your heating will adapt to continuous loud sounds and will give the impression that
the volume has in fact been reduced. What seems normal to you may in fact be harmful.
•
To guard against this
BEFORE
BEFORE
BEFORE
BEFORE
BEFORE Y
Y
Y
Y
YOUR HEARING AD
OUR HEARING AD
OUR HEARING AD
OUR HEARING AD
OUR HEARING ADAPTS
APTS
APTS
APTS
APTS
set the volume at a level.
Slowly increase the level until you can hear comfortably and clearly and without distortion.
•
Damage to your hearing is accumulative and is irreversible.
Any ringing or discomfort in the ears indicates that the volume is too loud.
•
Remember listening for prolonged period of time at high volume levels will harm your hearing.
Once you have established a comfortable listening level, DO NOT INCREASE THE SOUND LEVEL FURTHER.
The following list of typical sound levels may assist you in recognizing just how loud you have set the volume level.
DECIBEL
Level (dB)
Example
30dB
Quiet library, soft whisper.
40dB
Living room, fridge freezer bedroom away from traffic.
50dB
Normal conservation, quiet office, light traffic.
60dB
Electric sewing machine.
70dB
Vacuum cleaner, hair dryer, noisy restaurant.
THE FOLLOWING NOISE CAN BE HARMFUL UNDER CONSTANT EXPOSURE
80dB
Average city traffic, alarm clock buzzer at 2 feet, food mixer.
90dB
Motorcycle, heavy goods vehicle petrol lawn mower.
100dB
Pneumatic drill, chain saw, garbage truck, discotheque/night-club.
120dB
Rock band concert, thunderclap fast train passing by.
PERMANENT LOSS OF HEARING
140dB
THRESHOLD OF PAIN
Gunshot 2 feet away, jet plane taking off.
