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Question about Mission 780 Main / Stereo Speaker

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No Woof The Woofer on one of my speakers has no sound coming from it. I have them bi-wired so I switched cables and still the woofer produced no sound, leading me to believe that it is a speaker fault rather than cables or amp. The speakers sit on spikes on Mission Stance stands, as far as I know they have not been knocked over, at least, no one is admitting to it! Can I safely remove the back panel and check the wiring or is this best left to an engineer?

Posted by Clive Beatty on

  • 2 more comments 
  • cnorton101 Aug 07, 2008

    one of my speakers amp light is not on. Can it be a fuse?

  • marksmart Sep 27, 2008

    I have the same problem, thanx for the advice.
    Mark

  • Anonymous Oct 30, 2008

    midwoofers

  • Don Rhule
    Don Rhule Aug 27, 2019

    replace drivers with mark 2 versions.

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6 Answers

James Hodgson

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If these are Mission 780s your talking about, you're not the only one. The woofers supplied with the speakers originally have a known design/manufacturing flaw causing them to go "open circuit" after a few years use. The good news is that IAG (who now own Mission) can supply you with a pair of replacements for about £45 plus postage. (You'd be forgiven for thinking they should supply the replacements for free given the cost of these speakers new and the fact this is a design/manufacturing fault). Replacing your woofers is easy. Take off the front baffle. Remove the four rubber plugs that the baffle attaches too, and take out the 4 screws you'll find behind them. Now ease off the plastic moulded front pannel. Remove the four screws holding the woofer in place. Pull the spade connectors from their tags on the back of the speaker. Put the new woofer in by following this proceedure in reverse.

Posted on Oct 14, 2006

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salada

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The guy from [email protected] has these woofers available in North America. He is very knowledgeble with Mission products and provided quick delivery.

Posted on Aug 17, 2007

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Anonymous

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IAG told meto contact [email protected] for all mission 'old parts' which is the category that these 780's have fallen under.

Posted on Jul 03, 2007

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Anonymous

IAG have just lowered the price to £58 inc delivery.

Posted on Apr 04, 2007

Anonymous

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I have the same problem and I phoned IAG and the price seems to have gone up to £32 EACH plus postage.

Posted on Mar 22, 2007

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First, check if the speaker coils are blown (open Circuit). Take a multi meter, and, after removing the cales connected to the speaker, check for continuity. Reading should be either 4 or 8 Ohms. If there is no continuity, then there is nothing you can do except get a replacement. There is no need to get a technician to to do this basic check.

Posted on Aug 03, 2006

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