Small Stereo Install, But can't eliminate Engine Wine...Help !! | FerrariChat
Buy

Small Stereo Install, But can't eliminate Engine Wine...Help !!

Discussion in '360/430' started by Jajja, Jul 30, 2008.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. Jajja

    Jajja Rookie

    May 2, 2008
    38
    Phoenix, AZ
    Full Name:
    Joe
    #1 Jajja, Jul 30, 2008
    ok, no drilling took place on the car whatsoever (heard the stories on how it weakens the car), but we cannot for the life of us get rid of the alternator engine wine in the stereo for some reason.

    here is how the system is setup, has to be a bad ground but just can't figure it out.

    Small amp is grounded right to the battery
    headunit is grounded right to the battery

    nothing else is sharing a ground but for some reason there is a bad ground somewhere. Could it be that the chassis mount for the headunit is grounded to the frame and that is the other bad ground? i should try to ground the chassis of the headunit to the same ground of the battery.

    any other suggestions?
     
  2. Fast_ian

    Fast_ian Two Time F1 World Champ

    Sep 25, 2006
    23,397
    Campbell, CA
    Full Name:
    Ian Anderson
    #2 Fast_ian, Jul 30, 2008
    +1 Can't do any harm IMHO.

    However, I seem to remember there was a similar thread recently - Don't know if it got resolved, but maybe try a search in technical Q&A and here.

    Good luck,
    Cheers,
    Ian
     
  3. Jajja

    Jajja Rookie

    May 2, 2008
    38
    Phoenix, AZ
    Full Name:
    Joe
    #3 Jajja, Jul 30, 2008
    im the same guy. lol
     
  4. PCH

    PCH F1 Rookie

    Apr 7, 2004
    3,007
    #4 PCH, Jul 30, 2008
    Contact Kevin at Audio Illusions, (user name: k-diddy) for his opinion.
     
  5. AJTozzi

    AJTozzi Formula Junior

    Jan 22, 2006
    332
    Mine Hill, NJ
    Full Name:
    Anthony Tozzi
    #5 AJTozzi, Jul 30, 2008
    The first way to eliminate noise is to figure out where it is coming from. Is it radiated? Power line noise? Signal line noise?

    Start by removing the radio from the dash -- simply extend it out about a foot and see if the noise is still there.

    Next -- short the RCA (audio) inputs to the amplifier. Take a set of RCAs, cut them and short the two wires together. Now plug this into your amplifier while it is still on. Check for noise.

    Where is your amp mounted? Is it inside the cabin? I am assuming since it is grounded to the battery it is somewhere near it? Amplifiers (dependent on build quality) are very picky with being mounted near "noisy" electronics and/or batteries. The best spot I have found on 360s is the front of the hood "bonnet".

    Also -- do not ground your amp directly to the battery. It is actually better to use a good ground path that already exisits in the vehicle.

    Give us some more information as to the equiptment, how it is wired and where everything is mounted. Also -- what head unit are you using? If it is OE how did you feed the signal from into the amplifier. Are you using the line level outs of the FERRARI h/u or did you use speaker level inputs?

    Anthony
     
  6. Jajja

    Jajja Rookie

    May 2, 2008
    38
    Phoenix, AZ
    Full Name:
    Joe
    #6 Jajja, Jul 31, 2008
    Pioneer headunit, Rockford amplifier.

    noise goes away from you disconnect the headunit RCA's to the amp. This means that the noise is coming from the headunit. Amps are mounted in the bonnet. There isn't a true ground on the car because its aluminum, this is why ferrari grounds everything to the battery and unlike most america cars, run a ground from the alternator on the engine, right to the battery. as long as everything has the same ground, you should be ok with running a ground directly to the battery.

    we have the headunit, and amps connected to the same ground point on the battery. My last thought is that its the antenna jack to the head unit since this is grounded on the car elsewhere and is the only uncommon ground.
     
  7. mrpcar

    mrpcar Formula 3

    May 27, 2007
    1,114
    Chino hills, CA
    Full Name:
    Robin
    #7 mrpcar, Jul 31, 2008
    Check to see if you have any signal wire (RCA) that is wired tied to any power line, ground or power, you should run those wire separate away from each other. Also it would be a good idea to get some really good shielded RCA signal wires.
     
  8. Jajja

    Jajja Rookie

    May 2, 2008
    38
    Phoenix, AZ
    Full Name:
    Joe
    #8 Jajja, Jul 31, 2008
    checked that for sure. going to look into a really good ground loop isolator for the RCA's too to see if i can eliminate it that way after checking the antenna.
     
  9. Jajja

    Jajja Rookie

    May 2, 2008
    38
    Phoenix, AZ
    Full Name:
    Joe
    #9 Jajja, Jul 31, 2008
    Gents,

    ok figured it out. It was the antenna that has the bad ground and causing the noise. I am putting in antenna isolator to resolve it. i guess the ferrari stock head unit has a built in coil to resolve it but most aftermarkets do not.

    glad we figured it out. man that was a hassle.

    joe
     
  10. Fast_ian

    Fast_ian Two Time F1 World Champ

    Sep 25, 2006
    23,397
    Campbell, CA
    Full Name:
    Ian Anderson
    #10 Fast_ian, Jul 31, 2008
    Alright! - Glad you got it fixed. It's this kind of knowledge that I think could be summarized somewhere - A good old FAQ maybe?

    I know we have "search", but unless you're a propeller head, it can be difficult to sort the "wheat from the chaff" IMHO. - Then people post, get shouted at: "USE THE SEARCH BUTTON!" and never come back.....

    As always, my 02c,
    Ian
     

Share This Page