UP-1000U3 Version 1.0
Page 4 of 9
UP-1000U3
Amplifier
4. FUNCTIONALITY
4.1. Front panel
(1) POWER
indicator:
It lights when the amplifier is working.
(2) Power ON/OFF switch:
It turns on and off the amplifier.
(3) CLIP, SIGNAL, PROT and TEMP indicators:
The red LED
CLIP
lights when the signal level is near the saturation limit.
The green LED
SIGNAL
lights when audio signal is detected in XLR or JACK Line inputs.
The red LED
PROT
lights when protection circuit is activated, which may be due to an
overload or short circuit in the speaker line.
The yellow LED
TEMP
lights when the internal amplifier’s temperature reaches dangerous
levels for it.
(4) Volume
control:
Turning the potentiometer clockwise, increases amplifier’s volume.
Fig 1. UP-1000U3 Front Panel
