quiescent current alignment in (homebrew) audio class B amplifiers
One important addition: the quiescent current is normally/often set with 2 up to 4 or more silicon diodes from the base from one end transistor/Darlington (NPN) to the other end transistor/Darlington (PNP)! Sorry that I forgot this elementary solution with a few diodes. A basic video about how to align a class B audio amplifier and how to set it to its working point, where a minimum supply current is taken and a healthy supply current when the amplifier has to deliver its maximum output.More audio in my book "Schematics 2, audio amplifiers and loudspeaker boxes", author Ko Tilman.
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