Re: [OT] Most-requested item in Vista --> fugitive sound

["Scott R. Ehrlich" <user=81@nabble.blu.org>]

 > I no longer have the beginning of this thread, so I apologize if this is 
> unhelpful, but to expand on what you said here, 1/4" headphone jacks and 1/8" 
> earphone jacks are designed such that with nothing plugged into them, a 
> bypass circuit is closed that routes the the tip signal to another connector, 
> which is usually used to send the audio signal to a speaker.  Pushing the 
> plug in breaks that circuit so the plug's tip is connected to the input 
> signal instead of the bypass connector. 
> 
> The switching is accomplished by a spring contact that goes in front of the 
> center of the hole, which gets pushed away by the plug.