Can I fix my sub woofer

Discussion in 'Audio Visual' started by BuD, May 27, 2021.

  1. BuD

    BuD Member

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    My subwhoofer has started making a weird noise . Kind of like if you have paper and big gust of wind vibrates it. If I gently put my finger at bottom of the cone as in picture base works fine no wierd vibration sound. Ant tips if I can fix that or do I need to buy a whole.new sub?

    20210527_132534.jpg
     
  2. sammy_b0i

    sammy_b0i Laugh it up, fuzzball!

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    Can you see any kind of ripping in the material or separation between different layers?
     
  3. OP
    OP
    BuD

    BuD Member

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    I can see this around the edge
     

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  4. sammy_b0i

    sammy_b0i Laugh it up, fuzzball!

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    Ah, yes, well that's where your issue is coming from. I don't know about fixing that kind of separation. Someone here may know.

    My suggestions would lean towards something like sikaflex or t-rex in a caulking gun, and try to smooth it all over so it joins again from both sides, let it cure for a few days and then see, but if the material is quite old, it may be brittle and just tear somewhere new.
     
  5. OP
    OP
    BuD

    BuD Member

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    Thanks I do have some sikaflex I could try
     
  6. Hi-end Head

    Hi-end Head Member

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    What's happened here is the Foam edge surround has perished, in short it's stuffed. It can be repaired and repair kits are available. If your up to the job, simply remove the driver, the surround is glued to the speaker cone and the outer rim.. Great care is needed so not to damage the cone.. Nail polish remover works well in removing the old surround, and cleaning the cone. The outer edge can be removed with a box cutter knife, Full instructions, plus glues are provided in the kits,

    Check out E-Bay "speaker repair kits au" or look at, "speaker hospital"

    HTTPS://www.speakerhospital.com.au/kits-and-diaphragms/

    Or E-tone also offer a repair service, at a reasonable price

    HTTPs://www.etonesound.com/

    This pdf explains everything https://audiofriends.nl/pdf/refoaming.pdf
     
    Last edited: May 27, 2021
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  7. pH@tTm@N

    pH@tTm@N Member

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    Hi-end Head has nailed this. I would not even bother with sikaflex to be honest. It will simply continue to perish and tear in other places, plus the surround needs to have consistent compliance all the way around. sikaflex blobs will not help with that.

    Only other tip I have, is mark which way the cone it pointing up now with tape or similar, and same with the woofer basket frame itself.
    When you replace the surround make sure lines match up again.
    Then install the woofer UPSIDE DOWN. Gravity sort of slowly makes the woofer sag in one directions - as you can see from your tear in the surround. There is also a spider that does a similar job at the magnet end, so give it a holiday and make the other side work.
     
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  8. Hi-end Head

    Hi-end Head Member

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    Do not use a glue or anything else in an attempt a repair Glues , mastic's or our friends "sikaflex" will simply throw the cone out of alignment with the magnet, plus if the surround is perished, attempting to add something to it will simply allow it to fall apart or use a glue or anything else in an attempt a repair Glues , mastic's or our friends "sikaflex" will simply throw the cone out of alignment
     
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  9. sammy_b0i

    sammy_b0i Laugh it up, fuzzball!

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    ^ exactly why I said I don't have any actual advice around trying to fix it.

    It's good the pros have actual suggestions.
     
  10. power

    power Member

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    Gaffer tape until you buy a new one!
     
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  11. connico

    connico Member

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    This will actually work. Gaffer or duct tape its commonly done in emergencies
     
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  12. xplod140

    xplod140 Member

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    Just buy a new driver for ~$100 and swap it out. You could probably get a new foam and install it but unless you have lots of time and patience it's not really worth it.
     
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  13. OP
    OP
    BuD

    BuD Member

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    Thanks mate that's fantastic
     
  14. DrClaw

    DrClaw Member

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    I replaced the foam surrounds on my Wharfedales a few months back, wasn't that hard to do. The kit was about $60 shipped (with about $30 shipping :( ). I couldn't find anywhere that sold my driver, so it was either try that or buy an entire new set of speakers heh.

    I followed this guide if you want to see what's involved :

     
    Last edited: May 28, 2021
  15. cvidler

    cvidler Member

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    re-cone kit required.

    some brands offer them, other's not and you need to buy a new driver.



    as others have suggested, gluing the surround is possible, but it'll alter the properties of the driver, and change how it sounds, you may or may not notice that. but as the rubber/foam has perished it's only going to get worse.

    think of the surround as the suspension of your car, changing the springs will change how it feels. maybe better, maybe worse, but different for sure.
     
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  16. OP
    OP
    BuD

    BuD Member

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    yeah cant seem to find kit for my sub. magnat 301a. will just replace.
     
  17. Hi-end Head

    Hi-end Head Member

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    Don't be concerned with model, make, etc, Just concentrate on size of the surround If you order from "Speaker Hospital" you will be asked to supply specific measurements.

    Have you contacted Speaker Hospital or E-Tone with regard to a repair
     
  18. OP
    OP
    BuD

    BuD Member

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    Hadn't heard of them will check them out
     
  19. Hi-end Head

    Hi-end Head Member

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  20. OP
    OP
    BuD

    BuD Member

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    thanks mate im in brisbane will give this guy a call on monday. looks like its not that expensive according to his site
     

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