Engine wine, please help me out

[jteske88 10+ year member]

Well to start me n my buddy put extra batt in and crossover. Im seem to be getting wine when ever i hook sub out and front channels outs to the crossover. if i remove one it goes away, doesnt matter which one or combo i unplug/plug in. I read through and have tried all the tips in the alt wine thread to no luck. Last night i had gotten rid of it but the main run to the rear was disconnected.(Iwas making sure it was all set up correctly). then as soon as the main power get connected it started to wine. So my thing is im not sure where it gonna be. Like i said i know it must not be in back somewhere, but sounds like an rca issue or the deck itself. any one shed any light here i would love it.

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[maylar 10+ year member]

Grounds, grounds, grounds. Redo your ground wire locations for the amp and head unit.

Blackstone Merlot, 2007 is my choice.

 

[jteske88 10+ year member]

**** man, I will try, redid grounds allready, the headunit i ran to the rears to add to exsisting. Ground In the rear is on the Strut towwer to straight metel. Maybe its a monte carlo thing? ****** metal. guess i will try that today.

 

[gckless 5,000+ posts]

Grounds, grounds, grounds. Redo your ground wire locations for the amp and head unit.
Blackstone Merlot, 2007 is my choice.

Lol you beat me to it.

 

[jteske88 10+ year member]

well i just dont get why there is ground loop noise when the deck gets hooked up. Ive took my rca to headphone and tested it directly to crossover and no whine, only when the deck has two sets of rcas hooked up

 

[gckless 5,000+ posts]

Well have you tried what you thought it might be? You said yourself it could be an RCA issue, plug both in seperately to test those. Might also be your crossover. Did you try regrounding that too? You could try both RCA's from deck to amps, that would rule out crossover.

 

[jteske88 10+ year member]

Well if i plug em in seperately there is no noise, togerhter theres noise. Tried different rcas also same results. Last night i redid every ground there was,upgraded wires Any thing i could think of. like i said stuff was great last night till i had to hook up the main run, then the wine came back. Im just out of ideas currently and trying get as much info as i can so when i get off i can knock it out.

 

[maylar 10+ year member]

I have an install that did exactly the same thing. Only made noise when both pairs of RCA plugs are inserted into the amp. The problem is definitely ground loop - current flowing through the RCA shields. But this vehicle has a metal dash and the body is old and rusty so the amp ground and HU ground will never be the same. Plus it's a Pioneer deck. My solution was to put a ground isolator on the sub preouts, but only because it's impossible to fix the "right" way. As I said... grounds.

..And it's whine, not wine.