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Hi all, I have a MK MX-2000 sub that no longer works. Appears to power up but no audio. I've verified the two internal fuses are fine as is the power transformer and DC rectifier which provided about 45 VDC to the amplifiers. Hate to replace the how Sub and would like to fix it. I'm trying to locate a schematic. Anyone familiar with these? What would be common failures? The unit takes both L and R inputs and since there is no audio I figure something common to both channels is faulty. Any input appreciated

Posted by odonnks674 on

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David Dunn

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The sub is common to both channels. So is the source and its configuration regarding Low Frequency steering.

Have you established that there is audio programming coming onto the sub?

If you suspect something upstream of the sub, try one channel at a time, swap them, whatever. Feed it with a different channel to see it that makes a difference.

Posted on Feb 14, 2010

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