Professional Public Address System Professional Public Address System Professional Public Address System Professional Public Address System EMPA-250 EMPA-380 EMPA-500 Power Amplifier U S E R M A N U A L Before operating, please read this manual completely FEATURES Transformer isolated 100V, 70V and 4 Ohms speaker outputs, balanced, no grounding.
FRONT PANEL: : : : 2 3 4 5 Indication) AC Power Switch TEMPERATURE LED Indicator (high CLIP LED Indicator (Please reduce temperature indication, >90 ) ℃ the gain to prevent severely clipped waveforms reaching the loudspeakers) Unit’s Fan Intake Window SOUND LED Indicator (Output level) PROTECTION LED Indicator (DC fault or short circuit output protection...
OPERATION: Make certain that speakers and input sources are properly connected before switching on. Keep volume level turned down to minimum before switching on. Protection LED Indicator lights on while operation when faults happen. Switch off the apparatus immediately and correct the faults before switching on. INPUT CONNECTION: Ground Positive Input...
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