JL 250/1 V2

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here is the output
 

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Upside-down isn't an issue.

The intermittent distortion is odd.

I don't know why people prefer LCD displays. You can see that the analog display gives a much more accurate image.

Are the images from the positive and negative speaker terminals?

If you apply remote then remove it within a few seconds and check the output drive, do you have at least 8v of drive on all outputs?

Is the drive signal going to well within 1v of ground on the falling side of the drive signal?

Set the scope to DC coupling and set the trace to the center reference before checking the signal.
 
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