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Blown speakers?

Discussion in 'Home Cinema Speakers' started by mcfarfs, Sep 11, 2005.

  1. mcfarfs

    mcfarfs
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    Hi, my cousin had a party last night and for music, he connected his MP3 player into his amp which was driving his speakers, and then connected his dads amp into the line-out of his amp, so had another two speakers.

    Now being a party with lots of drunk young teenagers, they kept turning the music up perhaps louder than it should have been!

    At one point quite early in the party, my cousins speakers started playing up. One of them was really crackling and the other wasn't working at all. So he turned off that amp and just had his dads two speakers going. Then 20 minutes later or so, we tried his two again, and they worked fine! Whats that about?

    But then, towards the end of the party his dads two speakers did exactly the same as his had - one stopped and the other was crackling. Now why would they do this? I didn't have the chance to try them again since, because the party was in the garden and we have since taken it all back inside.

    His Dads speakers are about 25 years old, do you think they are buggered or may be ok?

    What exactly happens when a speaker "blows" anyway?

    Cheers!
     
  2. Steve.EX

    Steve.EX
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    Oh dear........................... :)
     
  3. mcfarfs

    mcfarfs
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    Any ideas?!
     
  4. eviljohn2

    eviljohn2
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  5. mcfarfs

    mcfarfs
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    Not really! :rolleyes:
     
  6. eviljohn2

    eviljohn2
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    That's a shame. :(

    A blown speaker can be mean all sorts of things from exploded capacitors in the crossover (loud bang, lots of smoke but nothing too serious) to any number of problems with the drive units.

    At a guess you drove them too hard at too high distortion levels and the voice coil heated up too much. Leaving it to cool down again would improve the sound again but I suspect you've done permanent damage which may or may not be audible at more sensible levels. Of course the speakers could be fine and it was the amplifiers that you were breaking. :)
     
  7. mcfarfs

    mcfarfs
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    :suicide:

    I hope it was that! I have just bidded on a Sony amp on ebay, so if my cousins is broken he can buy my old one! ;) Cheers for your help.
     
  8. Steve.EX

    Steve.EX
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    Rather a lot, however none of them read:
    Plug it all back in it will work better than before.

    Could be anything from (as EJ says) simple crossover failiure to amp damage (several things to go wrong in there) through to coil damage or even suspension damage. Take your pick.

    Reckon your best cooked meal and an afternoon to your local Sevenoaks with your Father to express your humbled guilt may be the answer.
     
  9. mcfarfs

    mcfarfs
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    So why do you think my cousins speakers were apparantly blown and then suddenly started working again?
     
  10. Steve.EX

    Steve.EX
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    If you are lucky and i have been witness to it several times, an amp, if turned down or allowed to cool down "can" resume "normal" operation.
    With respect to drivers it has been my experience that (at extreme volumes) by the time you can hear a problem the damage has already been done.
     

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