And there’s very little reading involved!
I hope this helps some folks!
is there a tldw; for the video? the theories in cliff notes?
In oversimplified terms: Output Impedance is a combination of RDS(on) (or its BJT equivalent), internal conductor/component losses and losses due to the circuit responding to back-EMF from the voice coil.
In oversimplified terms: The capacity of a system to reduce an oscillation.