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-   -   MTX 4250D distorted output (https://www.diyaudio.com/forums/car-audio/120794-mtx-4250d-distorted-output.html)

bil 5th April 2008 02:28 AM

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?

Perry Babin 5th April 2008 03:56 AM

Is this amp similar to the 250D?
http://ampguts.realmofexcursion.com/MTX_Thunder_250D/

bil 5th April 2008 02:08 PM

Yes it is similar except it is all SMT.

Perry Babin 5th April 2008 03:30 PM

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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