How much power is to much power?

DF is simply load impedance divided by source impedance.

Nothing more.

I think that DF is slightly more than nothing, but not near so much as most audiophiles attribute to it.

Dave

My understanding is Df matters but there is a wide tolerance in values that will work in any particular application.

You have to listen and judge. At least with dynamic drivers, if the bass sounds mushy or soft, a higher damping factor may help but the actual value does not matter that much.

I thought Magfan's test validated my view. LOL

A shorted woofer is like an amp with extra high DF. It does not make sound because there is no force continuously driving it. That is control!

Try to put a 4ohm resistor with high wattage rating in serious with your speaker. The amp still has the same output power. But the bass will be very distorted.

QED! :-)

Yep:Vett93, that was the point.
Now, extend the model to include speaker 'Q'.....