Question about Alesis Multimix 8 USB 8-Channel Mixer Spdif System

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Clip light on Multimix 12 Firewire always on

After functioning fine for a year the red clip light on this mixer is now always on and accompanied by a constant loud buzzy hum - I suspect it's the transformer, but also worry that the mixer is permanently damaged. Has anyone else had this problem?

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I have just gotten the same problem. In my case it worked fine for almost three years and one today I turned it on and this loud humming noise + the red clip light always on appeared. When I hit solo button on channels 9-16 the humming disappeares but the light would not go away. With solo on humming get louder on the mic channels individually (1-8). I am puzzled... No solution so far

Posted on Apr 10, 2010

  • eugene_m Apr 16, 2010

    I found a solution for my problem. I have Alesis Multimix FireWire 16. So the same humming and buzzing problem with the peak light always on. I followed a very simple tip from a post on YouTube (Just type in Google "Alesis capacitor repair").



    Here's what you do:

    1. unscrew the bottom cover panel of the unit (about 10 screws total),

    2. detatchthe bottom part of the unit from the top part unplugging about 5 or 6 different cables.

    3. unscrew the capacitor/power circuit board, that is attached to the inside surface of the bottom panel (its green and is about 4 by 5 inches. can't miss it - its the only one there)

    4. on the board you'll see 3 black cyllindrical filter capacitors. at least one of them will be blown. in my case the 1000mf had its gasket completely bulged out.

    5. replace both 1000 and 2000 filter capacitors. if you replace only one - it might not solve the problem.

    6.re-assemble the unit.



    This should do it. I hope this helps.

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I am running multimix 16 usb and had this issue the capacitors had blown I suggest checking this and replacing all the capacitors even if just a single blew out

Posted on Oct 04, 2013

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Same problem here...just contacted alesis

Posted on Mar 30, 2010

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My multimix 12 has been fine but I just purchased the multimix 16 to replace it. sadly I have the same problem mentioned above. I tried updating the firmware and it didn't help. I contacted Alesis and it suggest that the mixer needs to be serviced....

Posted on Jan 06, 2010

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Sorry I do not have any solution, but unfortunately I have the same problem with my multimix 12 fw. Have you found any solution to this yet? I would be thrilled if there were any easy solution such as Firmware upgrade or so....

Posted on Dec 17, 2009

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Posted on Jan 02, 2017

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If you are getting the clip on the main mix master and you are not being deafened and the humming sound is coming from the speakers not the mixer you may have a subsonic signal getting into the mixer. Disconnect all inputs and if this cures it go through until you find where it is getting in and sort that.

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