MTX 4250D distorted output - diyAudio
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Old 5th April 2008, 02:28 AM   #1
bil is offline bil  Canada
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Default MTX 4250D distorted output

Hi, I have a problem with a MTX 4250D, it's powering on but there is a lot of distortion at the output from the sub. I already changed the output transistor and resistors. Someone has an idea?
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Old 5th April 2008, 03:56 AM   #2
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Is this amp similar to the 250D?
http://ampguts.realmofexcursion.com/MTX_Thunder_250D/
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Old 5th April 2008, 02:08 PM   #3
bil is offline bil  Canada
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Yes it is similar except it is all SMT.
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Old 5th April 2008, 03:30 PM   #4
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Then it's probably more like the 6500D. Can you post a photo (or email it to me) showing the parts that have been replaced?

babin_perry@yahoo.com

Have you confirmed that you have both positive and negative rail voltage (on the output transistors) as well as positive and negative regulated voltage (on the op-amps)?
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