The correct procedure would be on a test bench, hooked up to a load box, and being able to bring the amp up to power with a variac while monitoring the output with an oscilloscope. In most cases I monitor the AC current draw to look for impending doom.
Hypothetically, if a voltage regulator fails the distortion could go over 50 %( missing half the waveform) causing both PG circuits to drop the input signal 40-50 dB. The output stage still will want to amplify the remnant. A auto transformer will not pass DC but will get close enough to possibly use tweeter and mid driver voice coils as fuses.
Now I need some more coffee.
Last edited by c_dk; 07-08-2016 at 07:31 AM.
|