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Blown speaker?

Discussion in 'Home Cinema Speakers' started by matblack, Apr 11, 2005.

  1. matblack

    matblack
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    Hi guys, I just noticed that one of my rears seems to have lost its bass cone :(

    Its a Kef Coda which I got cheap from RS a year or so ago so its no great loss and I might even relegate the working one to a 6.1 mid rear and replace the Q30s with Refs then move the Q30s to the back. However I wondered if there is a short term cure without replacing the cone?

    The bass cone is reluctant to move when pushed with a finger and makes a quiet grinding noise :(

    Also I was wondering why this might have happened? I've heard of tweeters going but not bass, what tends to be the issue behind this?

    Cheers

    MB
     
  2. Cliff

    Cliff
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    That is very unusual. I would phone KEF. They will probably replace it for a very nominal charge.

    Reasons for this type of fault?
    1) Playing too loud
    2) Amplifier fault- DC through voice coil
    3) Magnet assembly loose fouling coil
    4) Heat/humidity on cone distorting shape
    5) Spider becomes unglued
    6) swarf/ dirt in gap

    Enough to be going on with?

    Cliff
     

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