My subwoofer amp. with TL494 , LM324 , TDA7294.
Next step : test in car .
Schematic : here-> http://www.schematicsforfree.com/archive/file/Automotive/Circuits/Audio/TL494%20Car%20Audio%20Power%20Supply.gif .
First test : here-> https://www.youtube.com/watch?v=0TyUvigJ0QQ .
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