NewBuyer;463052 Wrote: > Hey there Andy! > Please advise if I'm wrong - but generally, I think that conventionally > the 3rd (ground) wire also ties the chassis ground together between > separate equipment. This is important because it prevents ground > voltage from otherwise riding on the signal wires, and enables both pos > and neg signal to share a common (balanced) impedance... is that not > correct?
I think that if your connection is transformer isolated, the ground connection will be mostly irrelevant. However, if not transformer isolated, the ground can be critical, because the grounds of your 2 systems may literally be may volts away from each other. Tying the grounds together will bring the common mode of the 2 systems together, and allow the amplifiers to work properly. Without connecting the grounds, you can easily exceed the common mode voltage specs of the receiving end of the system, and induce nasty hum. The Jensen Transformers web site has a bunch of really good app notes on hum and other problems with long signal lines. -C -- ccrome2 Caleb Crome Sr. Hardware Engineer Logitech SMBU (i.e. the Squeezebox people) <B>The future is here. It's just not widely distributed yet.</B> <I>-William Gibson</I> ------------------------------------------------------------------------ ccrome2's Profile: http://forums.slimdevices.com/member.php?userid=18023 View this thread: http://forums.slimdevices.com/showthread.php?t=68131 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/audiophiles
