Im working on a DD m4b. When I play a 100hz sinewave into the amp the the wave on the speaker terminals looks like this. Any idea why? It still reads as 100hz. Sorry for the upside down pic. Idk why it flipped like that.
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Is the amp producing full positive and negative rail voltage?
Do you have rail-rail oscillation on the output transistors?
Do you have rail-rail oscillation on the output transistors?