Originally Posted by MichaelJHuman He's right though. Damping
factor has been discussed. You might want to pick up Douglas
Self's book on amplifier design. Even if you don't have a
background in electronics, he discussed some stuff pretty
clearly without formulas and circuits. But there's some good
online articles on damping factor. As I recall, when you start
factoring in the affect cables have on damping factor, the
amplifier damping factor (inverse of output impedance) turns out
to be less significant. I think there's an audioholics article
on it. Here's one article on damping factor (not the most
concise, but lots of info)http://sound.westhost.com/impedanc.htm
MJHuman -- If you mean the Reciprocal of Impedance(Z), that is
known as Admittance (Y) to be exact, and yes all my years at
Stanford in EE were still embedded somewhere here... and before
that ME undergraduate, Ughh... Y=Admittance=1/Z, where
Z=Impedance which is defined for exponentials as the ratio of
voltage to current, and includes the Capacitan