I don't specifically know what kind of protection circuits Power Acoustik employs however I don't they have input short protection. You can verify it by just unplugging your RCA cables and if the unit still goes into protection the problem exists in the output stage.
Answers & Comments
I don't specifically know what kind of protection circuits Power Acoustik employs however I don't they have input short protection. You can verify it by just unplugging your RCA cables and if the unit still goes into protection the problem exists in the output stage.