1. Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

RFI/EMI in my earphones?

Discussion in 'General Hardware' started by yuntrips, Nov 15, 2009.

  1. yuntrips New Member

    Joined:
    Nov 5, 2009
    Messages:
    21 (0.01/day)
    Thanks Received:
    0
    Location:
    Massachusetts
    I am plagued by what sounds like EMI or RFI coming through my earphones. It varies from a sort of buzzing to a whining, or the sound of metal being ground by a very fine abrasive. It's hard to describe because it varies widely. It seems to coincide which any significant electrical activity in my build, i.e. visual changes on the video display (even when the mouse pointer moves), disk activity, etc. It isn't real loud, but it's there and i;'s driving me nuts.

    Anyone ever run into something like this? Ideas?

    Use the pulldown to see my system specs.

    Thanks.
     
  2. p_o_s_pc

    p_o_s_pc F@H&WCG addict

    Joined:
    May 2, 2007
    Messages:
    13,009 (4.55/day)
    Thanks Received:
    2,183
    Location:
    Newark ohio
    i had that problem really bad at one time. It got better when i redid the WM so maybe it is a shielding problem? try moving all power wires away from it as far as possible if it is on the front ports(the one on the case)

    BTW antec has been known to not have the best jacks and to make alot of noise... If your good at soldering and know of a way to better shield the wires from interference that could be an option
     
    Crunching for Team TPU
  3. yuntrips New Member

    Joined:
    Nov 5, 2009
    Messages:
    21 (0.01/day)
    Thanks Received:
    0
    Location:
    Massachusetts
    Shielding is what I thought, too. Yes, the phones are plugged into the Front Panel Audio jack. I should probably try them in the front speaker jack on the rear panel to rule out the audio chip. By the way, what is WM?

    It'll be hard for me to keep that wire harness away from the power cables. The audio header is on the bottom left of my MOBO.
     
  4. p_o_s_pc

    p_o_s_pc F@H&WCG addict

    Joined:
    May 2, 2007
    Messages:
    13,009 (4.55/day)
    Thanks Received:
    2,183
    Location:
    Newark ohio
    WM=Wire management.(moving the wires for looks or airflow) My audio header is also on the bottom left of the board and i am using the Antec 300 and had the same problem till i moved the power wires now it isn't nearly as bad. But yes try the jack on the back of the motherboard
     
    Crunching for Team TPU
  5. Polaris573

    Polaris573 Senior Moderator

    Joined:
    Feb 26, 2005
    Messages:
    4,281 (1.17/day)
    Thanks Received:
    718
    Location:
    Little Rock, USA
    I had a pair of cheap headphones with a long wire plugged into the headphone jack of a cheap pair of speakers. It was so bad I could make out words from a local radio station in the interference. For a couple days I thought I was going crazy or being haunted by ghosts. Problem wasn't nearly as bad if I used the plug on my soundcard and bypassed the speakers.
     
  6. KainXS

    KainXS

    Joined:
    Sep 25, 2007
    Messages:
    5,603 (2.06/day)
    Thanks Received:
    502
    lmao polaris
     
  7. yuntrips New Member

    Joined:
    Nov 5, 2009
    Messages:
    21 (0.01/day)
    Thanks Received:
    0
    Location:
    Massachusetts
    Alas, the front speaker jack on the mother board will not work for the headphones. Only the headphone jack on the front panel will work. Do you think ferrite cores on the front panel wire harness might work?
     
  8. p_o_s_pc

    p_o_s_pc F@H&WCG addict

    Joined:
    May 2, 2007
    Messages:
    13,009 (4.55/day)
    Thanks Received:
    2,183
    Location:
    Newark ohio
    to be honest i don't know. :ohwell:
     
    Crunching for Team TPU
  9. Wile E

    Wile E Power User

    Joined:
    Oct 1, 2006
    Messages:
    24,324 (7.91/day)
    Thanks Received:
    3,778
    I have this problem when I put my sound card next to my video card. If you had a sound card, I would've told you to try a different slot. Might be worth grabbing a sound card to try instead. It would sound better at least.
     
  10. MK4512

    MK4512 New Member

    Joined:
    Aug 26, 2009
    Messages:
    222 (0.11/day)
    Thanks Received:
    42
    Location:
    Toronto, Canada
    Funny, I had this problem yesterday!

    Route your audio cables away from your main power sources, including your fan power, as those are terribly shielded...

    I routed mine on the very inside of my case, right under my graphics card, and after that no more static/whine.

    Also, if you want perfect quality, then pick your back audio jack. Its a direct link from the mobo to the jack which means theres no chance for interference, but if you route your cables correctly, you should have the same effect on your front panel audio.
     
  11. theonedub

    theonedub habe fidem

    Joined:
    Apr 30, 2009
    Messages:
    7,312 (3.43/day)
    Thanks Received:
    4,014
    I had HORRIBLE emi on my front panel audio even after moving the wires as best I could away from the power cables. So just yesterday, while looking through some of my extra cables, I stumbled on a Ferrite Choke/EMI Ring filter wrapped the front panel wire around it 2x (wouldve done more if it were longer) and the interference is near gone @ idle, and very slight at full load (GPU folding & CPU crunching). Try it out, but as always ymmv.
     
    Crunching for Team TPU
  12. Solaris17

    Solaris17 Creator Solaris Utility DVD

    Joined:
    Aug 16, 2005
    Messages:
    17,476 (5.01/day)
    Thanks Received:
    3,777
    Location:
    Florida
    i was actually going to suggest this.
     
  13. sneekypeet

    sneekypeet Unpaid Babysitter Staff Member

    Joined:
    Apr 12, 2006
    Messages:
    21,833 (6.72/day)
    Thanks Received:
    6,355
    Last edited: Nov 17, 2009
  14. xBruce88x

    xBruce88x

    Joined:
    Oct 29, 2009
    Messages:
    2,505 (1.28/day)
    Thanks Received:
    710
    i'm having the same problem... now to find a ferrite core
     
  15. p_o_s_pc

    p_o_s_pc F@H&WCG addict

    Joined:
    May 2, 2007
    Messages:
    13,009 (4.55/day)
    Thanks Received:
    2,183
    Location:
    Newark ohio
    xBruce88x says thanks.
    Crunching for Team TPU
  16. sneekypeet

    sneekypeet Unpaid Babysitter Staff Member

    Joined:
    Apr 12, 2006
    Messages:
    21,833 (6.72/day)
    Thanks Received:
    6,355
    yeah even the clip on style will work.
     
  17. yuntrips New Member

    Joined:
    Nov 5, 2009
    Messages:
    21 (0.01/day)
    Thanks Received:
    0
    Location:
    Massachusetts
    I actually walked down to my local Shack and picked up two of the clip on style ferrite cores. I'll try them tomorrow. Thanks for all the feedback folks.
     
  18. Mussels

    Mussels Moderprator Staff Member

    Joined:
    Oct 6, 2004
    Messages:
    42,733 (11.25/day)
    Thanks Received:
    9,950
    i've had this problem with cheap onboard audio before, my solution was just a dedicated sound card.

    (also, it was far worse when using front panel audio)
     
  19. xBruce88x

    xBruce88x

    Joined:
    Oct 29, 2009
    Messages:
    2,505 (1.28/day)
    Thanks Received:
    710
    yea... walking requires me to go through the bad neighborhoods lol... i think i'll wait and drive after i get the spark plugs done in my truck tomorrow. looks like the $3 ones are just cheap enough for me to afford (i have like $5 in the bank right now) and it looks like they'll fit nicely on the audio line for the case.
     
  20. MK4512

    MK4512 New Member

    Joined:
    Aug 26, 2009
    Messages:
    222 (0.11/day)
    Thanks Received:
    42
    Location:
    Toronto, Canada
    p_o_s_pc and Mussels say thanks.
  21. Homeless

    Joined:
    Sep 14, 2005
    Messages:
    1,026 (0.30/day)
    Thanks Received:
    109
    Location:
    USA
    I used to have that problem with my radeon 4850. When high fps scenes occurred and a few minutes after that, I would get this really annoying EMI sound through my headphones regardless of the soundcard used. It's not really a fix, but I swapped it out with a nvidia card and haven't had the problem since
     
  22. yuntrips New Member

    Joined:
    Nov 5, 2009
    Messages:
    21 (0.01/day)
    Thanks Received:
    0
    Location:
    Massachusetts
    Nope... the ferrite chokes are on the cable but the EMI is still there and just as "loud". I really don't want to rip my case apart to get at the ground wires on the plugs... what next?
     
  23. MK4512

    MK4512 New Member

    Joined:
    Aug 26, 2009
    Messages:
    222 (0.11/day)
    Thanks Received:
    42
    Location:
    Toronto, Canada
    Sure? It's quite easy, you just unscrew it and clip off one little wire...

    Anyways, looks like your outta options... If it is your grounding, no other fix is going to work. As even if you get rid of the static, the grounding is going to mess with the end result.
     
  24. Solaris17

    Solaris17 Creator Solaris Utility DVD

    Joined:
    Aug 16, 2005
    Messages:
    17,476 (5.01/day)
    Thanks Received:
    3,777
    Location:
    Florida
    wrap the wire around it once or twice see if that helps.
     
  25. yuntrips New Member

    Joined:
    Nov 5, 2009
    Messages:
    21 (0.01/day)
    Thanks Received:
    0
    Location:
    Massachusetts
    Clipping the wire is not the problem. Getting at the wire I need to clip is. There doesn't seem to be an easy way to get under the front panel where the jacks are. Are you familiar with the Antec 902s configuration?
     

Currently Active Users Viewing This Thread: 1 (0 members and 1 guest)

Share This Page