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If a class AB amp has a zero crossing problem

-then its bias isn't properly set up- its actually class B until the bias is set up properly. Or there's a design bug- this sort of thing was solved in the 1970s or earlier!!

You'll note I said 'doesn't have to' in my prior post. That isn't the same as 'all'...

When I was putting myself through engineering school in the 1970s I worked at Allied Radio Shack's service department. I ran into amps and receivers with this problem quite often. Its easy to fix- increase the bias until the crossover notch is gone. Its easy to do by ear or 'scope. Looking at the specs of the equipment which we had on hand since I worked at the service department for 5 state region, when I had the equipment set up right, the bias current was nominally within spec. So this says one way Radio Shack was able to undercut the competition is they didn't spend as much time setting up the equipment prior to shipment. Found a similar issue with FM tuner alignment. Radio Shack often sold equipment that was the same inside as Kenwood or Pioneer but for less money. It didn't perform as well either, unless you spent the time setting it up.

The Topping B100 is a class B design and doesn't have this zero crossing problem, same for my EV amp I mentioned earlier. Please don't try to gaslight me on this...

This all goes to what I stated earlier:
They don't have to have an A region bias to pull this off- just good design .


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