On Tue, 24 Sep 2019 17:25:17 -0400
"Jim Wilkins" wrote:

snip
My electronic experience is almost all industrial and military, very
little consumer. Was that an H bridge?

Don't know Jim, just stuff I saw changing in the way things were
being done via schematics. I posted an image here of the power output
section, schematic for an old RS Cassette player in my truck:

https://i.postimg.cc/nhR9tKmK/RS-Cassette-Schem1.jpg

Note the voltage on the output IC's headed directly to the speakers...

--
Leon Fisk
Grand Rapids MI