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Reload Thread: >>>Engine whine and ground loop fixes... take two

  1. #256
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    Re: >>>Engine whine and ground loop fixes... take two

    Last thing I tried was the RCA ground trick because I thought that was only for Pioneer headunits, but I just did it with my Kenwood KDC-x396 and it worked!







  2. #257
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    Re: >>>Engine whine and ground loop fixes... take two

    I cant get the whine to stop. I've done a few things that made it better but its still there.
    the equipment- 2004 mercury mountaineer, Kenwood excelon 996, aq2200d on 2 sa 12's. aq 120.4 on factory speakers for now, have incriminator comp set but have been chasing alt whine so I haven't installed them yet. big three done in knu 1/0 ofc. a run of pos and neg to the back, distribution blocks (stinger) to the amps 1/0 on 2200 and 4 gauge to 120.4 Also have an old school mtx electronic crossover mtx rt01 i think (3 way). I have two runs of rca's running back to crossover (front and rear outputs).
    I had power and rca's ran together, ran rca's down other side of car that helped a little. I grounded the rca's to the deck- that helped a little. ran a 18 gauge ground wire from the hu to the distribution block in the back. also tied all grounds together at hu.- not sure if that helped or not.

    I think my next step is to run the amp straight off of a ipod or something. I have to find my adapter. if that doesnt work I will try new rca's? idk. my rca's are rockford fosgate twisted pair. I'm not sure if they are shielded.

    Its not too loud and cant be noticed at med to high volume. but when two or more people are in the car and are talking its super annoying.
    any more input would be greatly appreciated.



    I feel sorry for those who do not drink, when they wake up on the morning that's the best they're going to feel all day.-Frank Sinatra

    2004 mercury mountaineer
    Hu Kenwood excelon x996
    Fronts Incriminator audio comps
    Front amp Aq 120.4
    sub amp Aq2200d
    subs 2 sundown sa 12's @ 32hz
    wiring knu 1/0 ofc

  3. #258
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    Re: >>>Engine whine and ground loop fixes... take two

    hey guys i had a whine in my old car... grounded my alternator directly to my frame... never happened again. took 10 minutes tops




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    Re: >>>Engine whine and ground loop fixes... take two

    I have been reading this thread, and have not herd anyone talk about power location, as a cause for engine whine or ground loop problems.

    I have found many whine, poping, or huming problems to be where the power wire for amps and inverters, where hooked to main fuse box or other locations where lower power equipment are hooked to.

    This lets the higher power of a amp or inverter into the power lines of the lower power items, like your audio deck. Your audio deck picks this signal up and amplifies it to your speakers in a whine or huming sound.

    The solution is to always hook your power straight to the battery!
    Make sure your ground is good!
    Use shielded RCA cables.
    I only run my RCA's on the other side of the car for mids abd highs with high frequency's.
    I never had a problem running RCA's on the same side as power with lower sub frequency's.

    Also Pioneer has really lowered the quality on there lower line decks lately , and I would stay away from them if all possible.
    Alpine, Kenwood, JVC, Clarion, Sony are still solid choice's.

    Just my 2 cent's

    Thanks




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    Re: >>>Engine whine and ground loop fixes... take two

    I also need some help. I have an 01 brick lesabre with a kenwood hu. Fi Bl 15 currently on a power acoustic fire and ice series ( aq2200d is Otw) all 1/0 kni wire. Big 3 upgrade and all. When my hu is on I have a slight rumble coming from my sub. I have tried EVERYTHING. I relocated my ground several times I am now grounded straight to the battery. I tried new rcas. I tried a different ground for my hu. I tried ground my preamp outputs on the hu still nothing. If anyone can help it would be greatly appreciated im running out of ideas.




  6. #261
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    Re: >>>Engine whine and ground loop fixes... take two

    Quote Originally Posted by Rainelli View Post
    I also need some help. I have an 01 brick lesabre with a kenwood hu. Fi Bl 15 currently on a power acoustic fire and ice series ( aq2200d is Otw) all 1/0 kni wire. Big 3 upgrade and all. When my hu is on I have a slight rumble coming from my sub. I have tried EVERYTHING. I relocated my ground several times I am now grounded straight to the battery. I tried new rcas. I tried a different ground for my hu. I tried ground my preamp outputs on the hu still nothing. If anyone can help it would be greatly appreciated im running out of ideas.
    Have you tried a different deck?
    Try unplugging the amp from the RCA's and see if the rumble still occurs.




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    Re: >>>Engine whine and ground loop fixes... take two

    I haven't tried a new deck yet. And when I unhook my rcas from amp it stops




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    Re: >>>Engine whine and ground loop fixes... take two

    Quote Originally Posted by Rainelli View Post
    I haven't tried a new deck yet. And when I unhook my rcas from amp it stops
    You will most likely need a new deck to fix the problem... Since you have tried the known fixes... You can try to wrap the RCA's ground the amp's ground wire. Sometimes that can help the problem.




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    Re: >>>Engine whine and ground loop fixes... take two

    Ill have to try that. Replacing the hu will be a last resort. My aq should be here in a week or so. So ill find out if its just the amp or not




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    Re: >>>Engine whine and ground loop fixes... take two

    Quote Originally Posted by Rainelli View Post
    Ill have to try that. Replacing the hu will be a last resort. My aq should be here in a week or so. So ill find out if its just the amp or not
    You can try messing with the gains or running the head unit at a higher volume (as long as your not clipping...)
    There are line drivers, but they usually add noise.




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    Re: >>>Engine whine and ground loop fixes... take two

    Ive been playing with the gains it doesn't seem to make a difference. And I normally do turn up the volume so I don't have to hear it




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    Re: >>>Engine whine and ground loop fixes... take two

    United radio does free inspections... you just have to pay shipping.
    If you really like the deck it's worth it.




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    Re: >>>Engine whine and ground loop fixes... take two

    Just got my aq2200. Installed it and whala problem solved so I guess it was my old amp. Thanks for the help anyways.




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    Re: >>>Engine whine and ground loop fixes... take two

    Does grounding the RCA's work when using a line output converter? My subs will hit every time my engine idles. Once I start driving and get above the idling rpm range it quits. I've sanded the hell out of my grounds and they are more than abundant. My last resort is to ground the RCAs or run an inline ground loop filter which I don't want to do. But I don't want to take apart my whole dash to get to my loc to ground the RCAs if it doesn't work on LOCs anyways.

    I have a 2013 ford cmax with the Sony system if it makes any difference. Not stock sub setup. Running a Boston gt 2300 on a Boston spg555. Power and ground is OFC 0 gauge and 4 gauge to the inputs. Battery in the rear so no crossing of cables going on




  15. #270
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    Re: >>>Engine whine and ground loop fixes... take two

    thank you for this thread!!! been trying to figure out why my kenwood kdc-x794 was whining. tried a bunch of things, then came across this thread and grounded the rca's with wire. worked like a charm! just wish i had seen this earlier... before tearing everything apart... haha




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