QSC ISA500 quiescent current

[MarkusBass]

I'm looking for information about setting quiescent current and current limiters in QSC ISA500TI amp. The schematic does not contain this information. Has anyone got service manual for this amp?

Mark

[Jazz P Bass]

Here is a service bulletin that I found on the QSC site.
Down at the bottom the bias/ current specifications are indicated.
(Wheee!! "drive it into a short")

[MarkusBass]

Thank you very much. This solved the problem. I skipped the second part since I don't have 2 Ohms/1200W resistor :-). The amp works great.

Mark

[Jazz P Bass]

The factory does not even recommend resetting the current limit unless:
someone twiddled the pots.
There was a catastrophic failure requiring wholesale replacement of the output section.