Rob Adelman wrote in message ...
Harvey Gerst wrote:
"John L Rice" wrote:


I've never heard of this. How would shorting the terminals affect the cone
movement at all? Is there a concern about static charges or stray magnetic
fields modulating the cone or ???


John,

Some of the induced cone motion would be damped by the back EMF, created by the
voice coil.


The stuff you learn here! Simple things that you just would have never
thought of

Now that you have me thiniking, why not electromagnetic shock absorbers
for cars? They could be controlled by a microprocessor. Phase
cancellation for bumps..

I've heard rumors of bose working on this...