[DML] Re: Speaker "Grounds"

["content22207" <brobertson@xxxxxxxxxxxx>]

Marc is talking about the speaker commons, not 12v ground for the unit
itself.

Speakers are AC devices, not DC. In the bad old days, there was only
one amplifier inside a stereo, so it didn't matter if speakers shared
a common neutral return (amp was just receiving its same sine wave
back). But modern units usually have separate amplifiers for each
channel, or at least front & rear. If you tie the returns together,
amps are going to get screwy polarities back. One is going to be
switching hot at the same time another is switching neutral -- a short
circuit. 

Bill Robertson
#5939

>--- In dmcnews@xxxxxxxxxxxxxxx, Ryan Wright <ryanpwright@xxxx> wrote:
> 
> Hey Marc, what is the actual difference between the common ground &
> floating ground when it comes to wiring? Any stereo I've ever had (and
> I don't buy cheap, low power garbage) just connects black to ground.
> 
> -Ryan
> 







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