EN-11
12. Check maximum output level (XLR jack)
Switch to XLR input with rear panel switch.
Double AP output signal level.
THD should be < 0.01%, typically 0.002%.
Check all other channel.
13. Check short circuit protection
Set input level to get approx. 3V on the speaker output.
Short one of the outputs.
Unit should shut down nicely.
Repeat for other channel.
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