Question about Mission 782 Main / Stereo Speaker

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Midrange faulty I have a set of Mission 782’s (bought Dec 1999), whereby one of the 13 cm midrange drivers appears to have a problem. It regularly produces a loud resonance, and sometimes a knittering sound, always at about the same midrange frequency. 1 Can I assume that the fault is the driver, or could it be the crossover? 2 The driver is leaking fluid (and has been doing so from the beginning). I understand from the internet that this is a known manufacturing flaw. Will any replacement driver have the same weakness, or has the design been improved? 3 In this context, do I need to replace the midrange driver in the other speaker also? Otherwise I might end up with two unequal drivers (due to manufacturing changes since 1999), or at least one that has been running for 7.5 years, and the other new 4 How to get the right original pieces in Europe? 5 Can I expect the same fluid leakage problem with the 16 cm bass driver, or is this specific for the 13 cm driver? Cheers! VanManen

Posted by vanmanen on

  • Anonymous Sep 02, 2008

    Same midrange failure in the left side unit. No leaking fuild to be found or any signs there ever was any though. The 130mm Keraform unit just started to crackle, then cut in and out finally just failing altogether in a span of less then 10 minutes.

  • gcbruk Feb 22, 2009

    Yep - similar problem here as well. Both mid-range units have failed in my 782's, bought new in 2001 (so approx 8 years old). No noticable leak of fluid. They started to work intermittently - seemed to clear if I turned the wick up a little; but then died completely. Just contacted Mission to see what they say - not the kind of life I expect from a pair of £700 speakers!!

    P.S. noticed there's a guy selling replacement units on ebay for approx £40.



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Manuel Ribeiro

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Been there...I've had to replace both my drivers.
I made extensive research on the problem of the mid drivers for the 782 mission speakers.
this is the article with all the needed instructions :

Posted on Feb 20, 2016



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Mission supply an upgrade driver to rectify this problem.

Posted on Mar 21, 2013



I've had the same problem/s. A manufacturing fault with the original midrange drivers of all of my Mission 780's and 782 speakers. If you contact Mission through their website they will supply an updated style driver for about £45, I would recommend buying 2 because the other one will fail eventually, if like me you use them every day. All four failed within two years of each other.



Posted on Oct 05, 2008

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