alternator wine

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=105197
Printed Date: April 30, 2024 at 12:37 PM

Topic: alternator wine

Posted By: bigbev
Subject: alternator wine
Date Posted: June 02, 2008 at 2:00 PM

im running 1 autotek ss1900.d and 1 autotek ss 75.2 and im getting a bad alt. wine from all of my speakers, both amps are grounded to the same place. im running zero gauge wire from the battery to frame, from the battery to the body of the vehicle and from the engine block to the body, also from battery to the engine block so i know i have enough ground. Im assuming that the spot that the amps are grounded to is no good or mabe the ground for the head unit is not good enough. I would appreaciate any suggestions. the only thing i haven't tried yet is running a ground from the amps strait to the battery.

Replies:

Posted By: boogeyman
Date Posted: June 02, 2008 at 7:22 PM

do you have your power wire and rca's ran on opposite sides of each other, if not try that

Posted By: i am an idiot
Date Posted: June 02, 2008 at 8:00 PM

Pioneer deck? If so read this https://bcae1.com/images/rca/temporaryrcashieldrepair.html

Posted By: daboss593
Date Posted: June 03, 2008 at 7:42 AM

lol wooooooooooot pioneer decks are ground nightmares as mr idiot has pointed out.

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OWWWWWWWWWWW you said you discharged the cap!

Posted By: Big Dog
Date Posted: June 03, 2008 at 8:46 AM

Find out where and what to isolate. Start by unplugging all RCA's from head unit. Run engine. Whine?

1) If not, then plug one RCA into head unit but not completely - just so the tip enters but that the shield doesn't touch. Whine?

2) If no whine after step 1 - and RCA shield isn't touching head unit shield. You might need to cut the shield on the RCA at the head unit end of the cable.

3) If it whines after step 1 - and RCA shield isn't touching head unit shield. Using a wire, ground the shield to an underdash brace and test again.

You can repeat the same exercise for all RCA's. If above steps don't improve, repeat the same at the amplifier.

If you don't want to cut your shields, they sell isolators.

Try the above tests with antenna connected then disconnected.

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Prepare your future. It wasn't the lack of stones that killed the stone age.

Posted By: bigbev
Date Posted: June 03, 2008 at 4:22 PM

ok i tried everything you said and im still getting the wine, the only time i dont get the wine is when the rca's are completely unpluged so what would you suggest next. Ive had a few people on some other forums tell me that it might be that my amps are grounded to a bad spot. im going to try running a ground from the amps to the battery and see if that does anything, just haven't had a chance to go get any wire.

Posted By: csnut18
Date Posted: June 03, 2008 at 4:43 PM

Firstly, run a wire from your head unit to the ground location of the amps. You need to have the head unit grounded at the same spot as your amps to prevent ground loops. I can also tell you from personal experience that I have a system in my car and when all I did was replace my alpine deck with a jensen in dash screen, I got alternator whine when I never had it with the alpine. Your head unit does make a difference.

Posted By: i am an idiot
Date Posted: June 03, 2008 at 6:11 PM

Do you have a Pioneer deck????

Posted By: Big Dog
Date Posted: June 04, 2008 at 9:52 AM

Never add a ground wire from the amp to battery unless amp is under hood or battery is in trunk. Chassis still remains best ground conductor.

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Prepare your future. It wasn't the lack of stones that killed the stone age.

Posted By: Thack79
Date Posted: June 04, 2008 at 10:26 AM

find a ground point already used by the car to ground your amp.

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