User's Manual

Input mode is wrong
Terminals in short circuit
Choose the right input mode
Connect all the speakers then turn on
the unit
One channel no
sound
Connection in wrong
way
Examine the connections
Noise input ground bad or bad
connection
Connect the speakers or examine the
input sound resource
Karaoke no sound
The microphone do not
insert the jacks fully
Microphone is off
Microphone volume is in
the bottom
Insert the microphone into the jack fully
Turn on the microphone
Increase the microphone volume
Specifications：
Model No.:······························································ 9811L
Frequency range(Power amplifier)······················································35Hz-19KHz
Voltage·································································AC110-240V/50-60Hz
Power (RMS)·································································100W
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