Page 1 of 2 12 LastLast
Results 1 to 10 of 13

Thread: Okay...once again...ALT WHINE YAY....

  1. #1
    Maximum Bitrate Sidewalksalvage's Avatar
    Join Date
    Mar 2006
    Location
    NJ/RI
    Posts
    826

    Okay...once again...ALT WHINE YAY....

    Ive had this issue for a bit now....unfortunatly....i almost dont hear it myself anymore...however i want to kill the *#@^$^# whine.... I think its my cheap @$$ HU i bought of ebay (cuz i did my entire system for under $500 bucks...thats right a 2 subs 8 speakers 3000w system!! with cheap stuff that breaks fast!!!!!)

    How can i check if the whine is coming directly from the unit...attach speakers directly to it or something?

    What might cure this, better grounding i suppose?

    Thanks.
    Brown 2010

  2. #2
    FLAC Jahntassa's Avatar
    Join Date
    May 2005
    Location
    Conyers, GA
    Posts
    1,417
    I'd start unplugging RCAs and see at which point the whine goes away.

    Unplug from Amp, still there?
    Unplug from radio, still there? (with wires connected to amp)

    Could be the RCAs.. if it goes away when you disconnect from the radio, it's something to do with that. Could be power related, maybe try running power directly from the battery?

  3. #3
    Maximum Bitrate Sidewalksalvage's Avatar
    Join Date
    Mar 2006
    Location
    NJ/RI
    Posts
    826
    I have power straight from the battery now...should i also have the negative (-) rail also from the battery or just the +12v line?
    Brown 2010

  4. #4
    Maximum Bitrate 3onDubs's Avatar
    Join Date
    Aug 2005
    Location
    Anaheim Hills, Ca
    Posts
    847
    The negative wire is ground and should be grounded withing 3 feet of your amps (the shorter the better...the longer the noisier). The negative wire that matters is the one comming out of the amp that controlls your speakers (not your subs, since their filter won't allow them to get that high pitch anyway)....ground that within a couple feet of the amp (find a metal bolt close by that bolts into the chasis somewhere).

    Also, make sure that there is no power wire that comes in contact with any speaker wire...do these and you won't have noise.
    PostCount++


    - SrCsTc's Bezel
    - Alpine W200/H701
    - ED Nine.2X
    - OZ Matrix Elites
    - ED Nine.1
    - Idmax 12's

  5. #5
    Maximum Bitrate Sidewalksalvage's Avatar
    Join Date
    Mar 2006
    Location
    NJ/RI
    Posts
    826
    Ground the (-) speaker line? I have the speakers wired to the amp directly. Should I use the common car ground for the speakers? I though that would create more noise.
    Brown 2010

  6. #6
    FLAC edrex's Avatar
    Join Date
    Dec 2004
    Location
    West Chestinghamshire, UK init!!
    Posts
    1,088
    I think he means that if you have 2 amps - one for subs and one for speakers - that you should focus on the ground wire for speakers amp. The sub could not be the cause of the noise that you are getting because it can't make noise at that high of a pitch.
    Spent so far: $1,755
    Check Out My Work Log for Specs/Pics
    CarPC Progress[!!!!!!!!!!!!!!].....Installation[---------+].....Pastrami Progress[!!!!!!!!!!!!!!]
    Don't mess with Texas.
    It's not nice to pick on retards!

  7. #7
    _
    Join Date
    Mar 2004
    Location
    Little Elm, Texas
    Posts
    13,500
    you should try and ground your components all to the same point if at ALL possible.

    For instance, in my car, I'm running a 1/0 ground from the battery back to a distro block. I have all of my components grounds going INTO that distro block.

    In your car, try and ground all of your amps to the SAME point. This will help reduce the possibility of ground loops.

    Also, when you ground, make SURE that your making CLEAN contact to BARE metal.

    Using factory bolts isn't always a good idea, for a few reasons. Most of the time, when you remove a factory bolt, it's covered in crap, be it soda gunk, or a lock-tite type stuff, even paint. It's got something on it. Drill a new hole (into THICK steel), remove all paint from around the hole (1/2" should do it), use a ring terminal on the end of the ground wire, and put the screw through it, then bolt it down. Making sure that it will not move when you tug/pull/yank on the ground wire. It should be 110% solid.
    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!

  8. #8
    Constant Bitrate avengerki's Avatar
    Join Date
    Mar 2006
    Location
    Oregon
    Posts
    160
    I know it doesnt sound like much but installing ferrite beads on your cables can help cut down on the whine. Also using more shielding around the cables can help, braided wire loom surrounding the cables is good but even plain ol aluminum foil can work just make sure to also connect these to ground.
    Avengerki
    PC Install: 85%
    Car PC: Revo-Sys X300 Double Din: 1.3GHz Pentium
    Software install and setup: 35%
    Entertainment Package: 85%

  9. #9
    Maximum Bitrate Sidewalksalvage's Avatar
    Join Date
    Mar 2006
    Location
    NJ/RI
    Posts
    826
    I do have all my grounds at a common point (except the front amp), however its probably not the BEST ground in the world. What I find strange is that I have just as much whine from the front speakers even when the other amps are shut off. Also, if i take the input off of the amp, there is no whine at all. What it seems like is that the head unit itself is picking up the whine or something. Doesnt seem like this is very common from what ive read about...probably its just a POS head unit....
    Brown 2010

  10. #10
    _
    Join Date
    Mar 2004
    Location
    Little Elm, Texas
    Posts
    13,500
    which hu is it?
    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!

Page 1 of 2 12 LastLast

Similar Threads

  1. Hardest alt. whine question ever!
    By vettejock99 in forum Car Audio
    Replies: 5
    Last Post: 04-24-2006, 12:00 AM
  2. Ipod + Sony XA-300 + charger = alt. whine?
    By BMW325iS in forum Car Audio
    Replies: 1
    Last Post: 03-23-2006, 08:07 PM
  3. iPod, Sony XA-300 and alt. whine
    By BMW325iS in forum Newbie
    Replies: 1
    Last Post: 03-23-2006, 02:40 PM
  4. Strange alt whine when more than 2 channels (LONG)
    By vettejock99 in forum Car Audio
    Replies: 4
    Last Post: 02-26-2006, 11:38 AM
  5. Engine whine RANT
    By maxxell in forum Car Audio
    Replies: 6
    Last Post: 08-12-2005, 11:04 PM

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
  •