User Manual

Table Of Contents
Working with Amplifier PROFILEs, Cabinet PROFILEs, Power Amps and Guitar Cabinets 91
The internal power amp is mono and delivers 600 watts at 8 ohms; however, the wattage will be lowered to 300
watts when used at 16 ohms. The power amplifier provides sufficient headroom to avoid clipping, even with dynamic
clean sounds. Very loud signals and transients will then be compressed by a nice, organic-sounding soft-clipping
circuit. You should, however, use these 600 watts of power with caution - if you are running at high volumes and
notice any indications of speaker distress, turn down Monitor Volume or Power Amp Boost. The parameter “Power
Amp Boost” can be found on the last page of the Output Section, where you will also find a watt meter that shows
you how many watts the power amp is using at any given moment.
At 4 ohms, the wattage is electronically limited to 600 watts. If these 600 watts are exceeded the power amp is
deactivated for a short moment, which causes a short dropout. It would require insane volumes to experience such
dropouts. However, if you are connecting a 4-ohm cabinet, you should test it carefully to ensure that your loudest
signals stay below that critical level.
WARNING!
Never connect an active device to the power amp output! Any active devices (such as power soaks) that
have a grounded circuit will destroy the power amp by creating a short circuit.
Only passive speaker systems should be connected to the SPEAKER OUTPUT.
Please refrain from connecting devices with impedances lower than 4 ohms, as the power amp could be
damaged.
Always ensure adequate ventilation - especially if mounting your PROFILER into a rack. Failure to do so
may cause the power amp to shut down to prevent overheating.