Quote Originally Posted by MLA View Post
All grounds end up common, but the difference is the distance separating their terminations. In some cases, a common BUS is not as good as the main audio trunk ground being battery direct.

Are the head unit EQ sharing a common B+ and B- that branch off to each behind the helm or does each have its own B+ and B- coming off the audio distribution block on the port side? A little difference in resistance could create a ground loop.

Also, have you moved the ground reference jumper in the WS-420?
On the head unit and ws420 b+ and b- they have independent power and ground wires that run from them around the bow and terminate at the added bus bars that then terminate to the audio distribution blocks.

I have not done anything with a ground reference jumper in the ws420. This is the first I have heard of this.


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