Results 1 to 9 of 9

Thread: Engine noise Soluion?

  1. #1
    (6)
    (6) is offline
    Newbie (6)'s Avatar
    Join Date
    Oct 2004
    Posts
    47

    Question Engine noise Soluion?

    I have searched the threads and i can't find somthing that answers my question. I have a dlink usb radio hooked up in my car connected to my car antenna. The sound quality is good and better then i thought it would be. The issue i am having is that i can hear my RPM from the Line-in. I know its the line in because when i mute the Line-in when playing an mp3 i dont hear it.... Anyone who has ever installed stereo in cars will know how annoying that whining noise is.. What would be the best way to insulate/shield that thin wire going to the Line-in? Woudl this solve the problem youthink? Or Do you think that the noise is coming from the USB cable? Any thoughts on a resolution?

    Thanks for any replies.....

  2. #2
    See me in my wet t-shirt. stevieg's Avatar
    Join Date
    Aug 2003
    Location
    Warwickshire, UK
    Posts
    1,887
    Quote Originally Posted by (6)
    I have searched the threads and i can't find somthing that answers my question. I have a dlink usb radio hooked up in my car connected to my car antenna. The sound quality is good and better then i thought it would be. The issue i am having is that i can hear my RPM from the Line-in. I know its the line in because when i mute the Line-in when playing an mp3 i dont hear it.... Anyone who has ever installed stereo in cars will know how annoying that whining noise is.. What would be the best way to insulate/shield that thin wire going to the Line-in? Woudl this solve the problem youthink? Or Do you think that the noise is coming from the USB cable? Any thoughts on a resolution?

    Thanks for any replies.....
    Is the line-in cable running near anything? Is the USB d-link powered of a USB hub (which is powered from something grounded in a different place in the car)?
    Ford Focus MP3 : www.stevieg.org/carpc Blog Updated 29 January 2009!
    Car PC Status: Complete - Undergoing Software Redevelopment

  3. #3
    _
    Join Date
    Mar 2004
    Location
    Little Elm, Texas
    Posts
    13,500
    I'll go along with the grounding questions...

    do you have like 30 different grounds for everything you have installed or did you try to keep the number of grounds minimal?
    Jan Bennett
    FS: VW MKIV Bezel for 8" Lilliput - 95% Finished

    Please post on the forums! Chances are, someone else has or will have the same questions as you!

  4. #4
    (6)
    (6) is offline
    Newbie (6)'s Avatar
    Join Date
    Oct 2004
    Posts
    47
    Quote Originally Posted by stevieg
    Is the line-in cable running near anything? Is the USB d-link powered of a USB hub (which is powered from something grounded in a different place in the car)?

    I hace created a distribution block for my grounds so they are all at the same spot. The only ground that is not on that block is for my LCD...

    And yes the dlink is powered off of a hub.. A powered hub if that runs off my inverer which is also grounded off the block...

  5. #5
    MySQL Error MatrixPC's Avatar
    Join Date
    Sep 2003
    Location
    Beach City, Socal
    Posts
    4,053
    Pull that Cat 5 network cable you have laying around somewhere and make a stereo cable out of it.
    Basically buy a stereo plug (PC end) and 2 RCA plug (HU end) and solder together. That may help with "engine whine". Other than that don't run it next to hot wire.
    2004 Matrix XR A7N8X-VM/400 AMD XP-M 2500+, DS-ATX
    89 Supra Turbo P3 600E@750/Abit BE6 II, Alpine M-BUS Car2PC.
    Y2K Accord Dell GX150
    RoadRunner is the best FE PERIOD
    EmoRebellion is a SCAMMER

  6. #6
    _
    Join Date
    Mar 2004
    Location
    Little Elm, Texas
    Posts
    13,500
    is your ground to teh car an actual ground? have you cleaned off the paint around the contact points, etc? I mean a SOLID ground?
    Jan Bennett
    FS: VW MKIV Bezel for 8" Lilliput - 95% Finished

    Please post on the forums! Chances are, someone else has or will have the same questions as you!

  7. #7
    (6)
    (6) is offline
    Newbie (6)'s Avatar
    Join Date
    Oct 2004
    Posts
    47
    Quote Originally Posted by Red GTi VR6
    is your ground to the car an actual ground? have you cleaned off the paint around the contact points, etc? I mean a SOLID ground?

    The ground is a solid ground connection. And the oinly whine i am getting when the RPM increses is from the Line-in.

    I will try the cat 5 idea and see if that helps aswell...

    Any other suggestion while i try this????

  8. #8
    _
    Join Date
    Mar 2004
    Location
    Little Elm, Texas
    Posts
    13,500
    where are your gains set at on your amps? I would try turning them down, if they are at or near maximum you will run into this....

    it really sounds like a ground loop issue, with can be a biotch to trouble shoot
    Jan Bennett
    FS: VW MKIV Bezel for 8" Lilliput - 95% Finished

    Please post on the forums! Chances are, someone else has or will have the same questions as you!

  9. #9
    FLAC shakes's Avatar
    Join Date
    Oct 2003
    Location
    Atlanta GA
    Posts
    1,064
    in my experience in the past, whine when the RPMs increases has come from interference on the audio cable. (i.e. bein too close to a power cable.)
    My JeepPC Install

    "there are no stupid questions, just stupid people."

    "it's been agreed the whole world stinks so no one's taking showers anymore"

Similar Threads

  1. ARGH! Engine noise!!
    By JayKaye in forum Car Audio
    Replies: 23
    Last Post: 06-01-2008, 05:08 AM
  2. Noise (from engine and other sources) HELP!!!
    By sstylos in forum Car Audio
    Replies: 6
    Last Post: 09-20-2005, 12:41 PM
  3. Horrible engine noise
    By futuresweets10 in forum Car Audio
    Replies: 27
    Last Post: 01-24-2005, 10:38 AM
  4. VGA Cable causing engine noise
    By sq_geek in forum Car Audio
    Replies: 19
    Last Post: 12-28-2004, 11:47 AM
  5. Aluminium foil help reduce engine noise?
    By JayKaye in forum Car Audio
    Replies: 10
    Last Post: 05-04-2004, 09:38 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •