Compact Disc Player
GCD720RA Series
Instruction Manual
Performance Note
Whilst this unit has been designed to provide the best possible anti shock protection when on
the move, it cannot provide completely uninterrupted playback whilst running or Jogging.
Programme Play...............................Up to 24 tracks
Line output.....................................…0.6V RMS
Earphone output...............................18mW
Power requirement............................DC 4.5V external and battery 3V
( "AA" Cell x 2) (IEC R6. JIS SUM-3
or Ni-MH rechargeable battery)
Dimension......................................…130(W) x 27(H) x 140(D) mm
Weight...........................................….200g not including battery (Main Unit)
For improvement purposed, specification and design are subject to change without notice.
Your 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 hearing 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 YOUR HEARING ADAPTS set the volume at a
low 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.
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 whispers
40 Living room, fridge freezer bedroom away from traffic.
50 Normal conversation, quiet office, light traffic.
60 Electric sewing machine.
70 Vacuum cleaner, hair dryer, noisy restaurant.
THE FOLLOWING NOISES 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.
100 Pneumatic drill, chain saw, garbage truck, discotec / night - club.
120 Rock band concert, thunderclap.
PERMANENT LOSS OF HEARING
140 THRESHOLD OF PAIN Gunshot 2 feet away.
180 Rocket Launching pad.
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