Closed Thread
Results 1 to 6 of 6

Reload Thread: 1997 Audi A4

  1. #1
    mv240z's Avatar
    mv240z is offline Junior Member



    Join Date
    Apr 2003
    Location
    GIG HARBOR, WA
    Posts
    13
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Icon32 1997 Audi A4

    I (and several "high end") installers have been trying to figure out the cause of a very strong system resonance between 650 and 1000hz. I have tried head units from Alpine, Nakamichi, and Sony; ADS, Dynaudio, Focal, and Kicker speakers; Nakamichi, McIntosh, and JL Audio amps; PPI and Phoenix Gold Xovers; and Audio Control and Eclipse EQs. The doors had been modifies to fit 6 1/2 3-way systems. Cranking the EQ way down in the offending bands helps some, but that, of course, messes up lots of other things. I am at a loss. Has anyone else experienced this problem? ANY help much appreciated.







  2. #2
    mattj's Avatar
    mattj is offline Resonant Engineering



    Join Date
    Aug 2002
    Location
    Wisconsin
    Age
    31
    Posts
    6,293
    Post Thanks / Like
    Images
    1
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    ever use sound deadner? that may help...



    (SUMMER)
    2001 Ford Mustang GT Premium
    Mach460
    Alpine CDA-9835
    KnuKonceptz Wiring


  3. #3
    denim's Avatar
    denim is offline SSAudio.com



    Join Date
    Oct 2002
    Location
    SSA HQ East
    Age
    37
    Posts
    28,315
    Post Thanks / Like
    Images
    15
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    640 Post(s)
    sounds like there might be something deep in the electrical system that is picking up engine noise





    CarAudio.com mod(original)

  4. #4
    mv240z's Avatar
    mv240z is offline Junior Member

    Threadstarter


    Join Date
    Apr 2003
    Location
    GIG HARBOR, WA
    Posts
    13
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    Thanks for the responses. I have extensive sound deadening in the doors and on rear shelf. I don't think it's electrical since it happens when using the Sheffield test disc and a Radio Shack db level meter.




  5. #5
    denim's Avatar
    denim is offline SSAudio.com



    Join Date
    Oct 2002
    Location
    SSA HQ East
    Age
    37
    Posts
    28,315
    Post Thanks / Like
    Images
    15
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    640 Post(s)
    ok I am stumped, but it is has to figure out when I cant get my hands on the car it self, but I will ask some friends





    CarAudio.com mod(original)

  6. #6
    mv240z's Avatar
    mv240z is offline Junior Member

    Threadstarter


    Join Date
    Apr 2003
    Location
    GIG HARBOR, WA
    Posts
    13
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    Thanks. Someone suggested polyfill in the doors, but I suspect that it would retain moisture and lead to rust. Has anyone used polyfill in doors? I suspect the problem has to do with the door rebuilds that were done. So, I guess one solution would be to start with new door panels and use only 5 1/4 speakers. Thoughts?




Closed Thread

User Tag List

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may post attachments
  • You may edit your posts
1e2 Forum