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<blockquote data-quote="joshpoints" data-source="post: 2127126" data-attributes="member: 546465">So after ungrounding the rca&#039;s I found that the only way to get the whine is when all four channels are hooked up.&nbsp; For a test I ran the rca&#039;s so that I would run front left and rear left to see if crossing front and back channels together would cause whine and it didn&#039;t.&nbsp; So no matter how I run 2 channels even front left and rear left together I don&#039;t get a whine.&nbsp; It only happens when I run all 4 channels at the same time.&nbsp; When all 4 channels are ran then I get a whine in all 4 speakers as well.&nbsp; Now I&#039;ll go and see what happens when I run 3 channels.Okay I ran it with 3 channels hooked up and there was no whine.&nbsp; I don&#039; t think it&#039;s the amp because when I ran one set of rca&#039;s off a portable cd player&nbsp; with rca&#039;s from outside the car and the other set off the h/u and there was no whine.I guess I could go to radio shack and get another adapter that goes cd player to female rca connection and use the pre-existing rca&#039;s that are running through the car (one getting a signal from the h/u and the other set powered by portable cd player.Do rca&#039;s need to be ran away from each other?&nbsp; All mine are ran down the passenger side near door touching each other.&nbsp; Maybe I&#039;ll run one set down the driver&#039;s side door up against a power wire and one down passenger side?&nbsp; Do you think this would help or no?</blockquote>

[QUOTE="joshpoints, post: 2127126, member: 546465"] So after ungrounding the rca's I found that the only way to get the whine is when all four channels are hooked up. For a test I ran the rca's so that I would run front left and rear left to see if crossing front and back channels together would cause whine and it didn't. So no matter how I run 2 channels even front left and rear left together I don't get a whine. It only happens when I run all 4 channels at the same time. When all 4 channels are ran then I get a whine in all 4 speakers as well. Now I'll go and see what happens when I run 3 channels. Okay I ran it with 3 channels hooked up and there was no whine. I don' t think it's the amp because when I ran one set of rca's off a portable cd player with rca's from outside the car and the other set off the h/u and there was no whine. I guess I could go to radio shack and get another adapter that goes cd player to female rca connection and use the pre-existing rca's that are running through the car (one getting a signal from the h/u and the other set powered by portable cd player. Do rca's need to be ran away from each other? All mine are ran down the passenger side near door touching each other. Maybe I'll run one set down the driver's side door up against a power wire and one down passenger side? Do you think this would help or no? [/QUOTE]

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