I just read a thread from some years ago where someone explains how to check for continuity between the negative leads of an amp in order to determine if it's common grounded.
So I'm using my ohm meter to conduct the testing..
Should the amp be powered ON or completely OFF (disconnected) while testing?
The reason I ask is because I get different readings:
With the amp OFF, I get a high ohm reading (that suggest no continuity)
With the amp ON, the ohm meter shows a resistance of almost 0 ohms (less than 0.5ohms, therefore common grounded).
Any info on this matter will be greatly appreciated.