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Thread: Buzzing speakers

  1. #11
    Join Date
    Apr 2009
    Location
    Staines, Middlesex, UK
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    11,649
    Quote Originally Posted by leehallum View Post
    Thanks Steve, I have the four speakers on mine, do you think it is worth looking at the amp as a potential cause, I am sure you will have a much better idea on this than I do : )
    With an issue like this the first thing to do is to check all connections (including the ones on this amp AND the earth connections mentioned).

    That is a "free" check.

    Can an you remind me if this is a noise from one door or one speaker / tweeter in one door, or is the buzz coming through all speakers more or less.

    Steve B

  2. #12
    Join Date
    Sep 2015
    Location
    Glasgow
    Posts
    289
    It could be moisture. I stupidly put a steam cleaner in my air con vent to clean it out, next thing my speakers were buzzing. I put the a/c on highest heat with all vents closed for about 30 mins. The radio needed reset as it locked itself but all the buzzing went away.


    Sent from my iPhone using Tapatalk

  3. #13
    Join Date
    Apr 2015
    Location
    Winchester
    Posts
    150
    Hi Steve the buzzing is coming through the one tweeter in the rear passenger side door, thanks

  4. #14
    Join Date
    Apr 2009
    Location
    Staines, Middlesex, UK
    Posts
    11,649
    Have you tried swapping the teeeter for the one on the other side of the car just in case it is the tweeter itself. Unlikely but worth trying. (And you can check again to see if it is shorting out at all))

    Steve B

  5. #15
    Join Date
    Apr 2015
    Location
    Winchester
    Posts
    150
    Hi yes I did buy a replacement tweeter which I swapped over with the buzzing one, but it didn't make a difference. And the one I had originally looked perfect with no visible signs of any possible issues. I did also get the head unit out last week and did a very quick look at the connections which looked fine. I will however do this again and have a better look at it at the head unit end. Everything else from what I could see behind the door card looked really clean with the wires and connections. I was thinking the next step might be to buy a replacement amp to try swapping it to see if this helps.

  6. #16
    Has anyone else pinpointed this Buzzing from the rear Speakers?

    It's just started on my car and I reckon it's possibly been since changing the four coil packs and spark plugs.

    On another thread it say's it's the four speaker amp, where is that exactly?

    Cheers

    Doug

  7. #17
    Quote Originally Posted by Birdfish View Post
    Has anyone else pinpointed this Buzzing from the rear Speakers?

    It's just started on my car and I reckon it's possibly been since changing the four coil packs and spark plugs.

    On another thread it say's it's the four speaker amp, where is that exactly?

    Cheers

    Doug
    The rear amp is under the drivers seat as such in the underfloor compartment , just lift up the carpet back edge under the front of the drivers seat and move the carpet forward and youl see a triangular alloy lid with 3 black toggle clips twist these 90 deg and the alloy lid will lift out ...
    Audi A2 TDI SE , Working sky , Bose , Dis , rear electric windows , Red leather .... Daily Driver

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  8. #18
    Thanks Jigsaw, I'll have a look and check it out!

    Sorry for the late reply, close family bereavement unfortunately.

    Thanks

    Doug

  9. #19
    Hi,

    it would appear to be an earth fault of some kind, I connected the amp in the footwell directly to the battery earth and the buzzing stopped on the rear speakers, I don't understand this as isn't the Amp bolted onto the body and therefor earthed to the battery anyway?

    Before I tried the simple stuff I tried the hard stuff first "as you do", anyway on stripping the amp down I found several dry joints on the amp chip itself and also the connector, so soldered them up with no difference, then did the old TV repair trick of squeezing the electrolyte capacitors gently one by one, there was one that changed the tone of the buzz to almost zero, it's a 2.2mf 50volt black coloured capacitor, I don't have one but will change this to see what happens.

    Anyone got the circuit diagram for the Amp? That way I'll be able to see what this Cap does.

    Edit Update: Changed the 2.2mf Capacitor and it lowered the buzz a little for sure but not the full fault.

    I've just ran another earth from the 12volt cig lighter earth to the Amp, when this was just a touch test it stopped the buzz but now that it's soldered in place at both Amp & cig 12v earth the buzz is still there, this makes no sense? I can also take a wire from the body of the stereo CD and ground it on the seat runner and the buzz stops. My only conclusion is the suppression is being done through my body/fingers, we used to get a similar fault on TV's and VCR's.

    I don't want to buy an amp yet as I still think this is an external earth or suppression problem, we'll see?

    Any more suggestions?


    Thanks
    Last edited by Birdfish; 19-06-2017 at 10:06 PM.

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