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Engine whine and ground loop fixes... take two
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<blockquote data-quote="tipptop" data-source="post: 7505386" data-attributes="member: 637006"><p>Ok little update....</p><p></p><p>I switched the rca's for front and rear on the back of the HU. There was no change, the clicking/ticking rev dependant noise was still coming from the front right mid and tweet. I was hoping that a problem with the HU or rca's would make the noise switch to the rear right mid and tweet. The noise stayed in the front right mid and tweet.</p><p></p><p>I then switched the speaker wiring at the amp for the left and right fronts and the noise changed from the front right mid and tweet to the front left mid and tweet. So my limited knowledge of this makes me think there is a problem with the amp itself. Anyone any ideas? If there is a problem with front right output channel, why does it only manifest itself when the engine is running? The system is crystal clear when running on battery power. I can't figure it out.</p><p></p><p>Any ideas/info appreciated.</p><p></p><p>Right after further T/S it appears that manipulating the fronts rca plugs at their entry to the amp has a direct effect on the noise. Just play with them a little and the noise appears and dissapears. I can move them in such a way to always have the noise or not have it.... However i manipulate them into a position where there is no noise and after a little drive the noise is back....</p><p></p><p>Should I open the amp and see if something is wrong?</p><p></p><p>Does anyone think the wrapping wire around the rca's will work on the amp end???? This is surely a grounding issue as its rev dependant and only present when the engine is running.</p><p></p><p>Maybe I should start a new thread.</p></blockquote><p></p>
[QUOTE="tipptop, post: 7505386, member: 637006"] Ok little update.... I switched the rca's for front and rear on the back of the HU. There was no change, the clicking/ticking rev dependant noise was still coming from the front right mid and tweet. I was hoping that a problem with the HU or rca's would make the noise switch to the rear right mid and tweet. The noise stayed in the front right mid and tweet. I then switched the speaker wiring at the amp for the left and right fronts and the noise changed from the front right mid and tweet to the front left mid and tweet. So my limited knowledge of this makes me think there is a problem with the amp itself. Anyone any ideas? If there is a problem with front right output channel, why does it only manifest itself when the engine is running? The system is crystal clear when running on battery power. I can't figure it out. Any ideas/info appreciated. Right after further T/S it appears that manipulating the fronts rca plugs at their entry to the amp has a direct effect on the noise. Just play with them a little and the noise appears and dissapears. I can move them in such a way to always have the noise or not have it.... However i manipulate them into a position where there is no noise and after a little drive the noise is back.... Should I open the amp and see if something is wrong? Does anyone think the wrapping wire around the rca's will work on the amp end???? This is surely a grounding issue as its rev dependant and only present when the engine is running. Maybe I should start a new thread. [/QUOTE]
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Engine whine and ground loop fixes... take two
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