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3.0 Operation
3.1 Precautions
Your amplier is protected from internal and external faults, but you should still take
the following precautions for optimum performance and safety:
1. Before use, your amplier rst must be congured for proper operation,
including input and output wiring hookup. Improper wiring can result in serious
operating difculties.
For information on wiring and conguration, please consult the Setup section of
this manual.
2. Use care when making connections, selecting signal sources and controlling the
output level.
3. Always be sure to have all levels at minimum when connecting or disconnecting
audio sources from the inputs, especially when MIC is selected from the MIC/
LINE switch. Failure to do so may cause the amplier or speaker to go into a
protection mode or even cause damage.
4. WARNING: Never connect the output to a power supply, battery or power main.
Electrical shock may result.
5. Tampering with the circuitry, or making unauthorized circuit changes may be
hazardous and invalidates all agency listings.
6. Do not operate the amplier with the red Clip LEDs constantly ashing.
7. Do not overdrive the mixer, which will cause clipped signal to be sent to
the amplier. Such signals will be reproduced with extreme accuracy, and
loudspeaker damage may result.
8. Do not operate the amplier with less than the rated load impedance. Due to
the amplier’s output protection, such a conguration may result in premature
clipping and speaker damage.
9. Use the amplier in a well-ventilated environment and do not use it in ambient
temperature conditions in excess of 40°C. Failure to do so will result in the
automatic disconnection from the power supply as the overheat auto protection
function will be activated and there will not be any audio signal coming out
of the amplier. In this case, turn down the volume to the minimum, and the
amplier will soon resume working. When the amplier returns to normal
temperature you may turn the volume up to a safe level.
10. If the line voltage to the amplier is too low, the low voltage protection function
will be activated.
CAUTION: JBL is not liable for damage that results from overdriving other
system components.
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