Working with Amplifier PROFILEs, Cabinet PROFILEs, Power Amps and Guitar Cabinets 91
• Cabinets with an open back will acoustically reduce the bass frequencies — this means wattage which the power
amp delivers, and the speakers still have to process, but you cannot hear it and therefore won’t realize.
• The scale of the Wattage Meter is calibrated to 4 ohms. If your cabinet has an impedance of 8 ohms, you need to
halve the displayed values. If your cabinet has an impedance of 16 ohms, you need to divide the displayed values by
4.
• If you combine multiple speakers, the wattage is split. For example, if you have four speakers each rated as 50
watts, they can handle 200 watts in total.
• If you are running at high volumes and notice any indications of speaker distress, turn down (Monitor Output)
Volume or Power Amp Boost.
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.
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