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<blockquote data-quote="matthewo" data-source="post: 7212318" data-attributes="member: 567073">well i have had multiple different amps in this car. and 2 source units including the stock one.&nbsp; everyone who owns this car has the dreaded alternator whine.&nbsp; the alternator actually makes a whining noise sometimes when the car starts that sounds like a supercharger(very noisey alternator).right now i have the headunits power and ground connections run directly to the trunk and connected to the battery(fuse)&nbsp; the audison bitone processor is tapped in and fused off the same deck power wire.&nbsp; this was the cleanest way i could wire it, but i still have a bit of alternator whine.&nbsp; without running the power and ground of the deck to the trunk the whine is even worse.the system is perfectly clean, NO whine when i used the decks digital coax output directly into my bitone processor digitally.&nbsp; so this tells me the problem is before the processor, and has nothing to do with after the processor.i have a stinger ground loop isolator hooked up to the rcas input of the processor right now.&nbsp; it has 2 wires that come off the ground loop isolator.&nbsp; i think they are the sheilds of each rca cable???&nbsp; when i tie them together the alternator whine almost goes away, when they are apart its pretty much the same and not even worth using the ground loop isolator.could the problem be that the rca sheilds just need to be tied together and not even use a ground loop isolator?</blockquote>

[QUOTE="matthewo, post: 7212318, member: 567073"] well i have had multiple different amps in this car. and 2 source units including the stock one. everyone who owns this car has the dreaded alternator whine. the alternator actually makes a whining noise sometimes when the car starts that sounds like a supercharger(very noisey alternator). right now i have the headunits power and ground connections run directly to the trunk and connected to the battery(fuse) the audison bitone processor is tapped in and fused off the same deck power wire. this was the cleanest way i could wire it, but i still have a bit of alternator whine. without running the power and ground of the deck to the trunk the whine is even worse. the system is perfectly clean, NO whine when i used the decks digital coax output directly into my bitone processor digitally. so this tells me the problem is before the processor, and has nothing to do with after the processor. i have a stinger ground loop isolator hooked up to the rcas input of the processor right now. it has 2 wires that come off the ground loop isolator. i think they are the sheilds of each rca cable??? when i tie them together the alternator whine almost goes away, when they are apart its pretty much the same and not even worth using the ground loop isolator. could the problem be that the rca sheilds just need to be tied together and not even use a ground loop isolator? [/QUOTE]

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