So, I have this keyboard amplifier, a Yorkville 50K (mid 1990s).
I want to replace the 10" crap speaker with a guitar speaker, and disable the tweeter (leaving it in place).
What load/impedance would the amplifier be most happy with?
and (looking now at the third image)
Can I leave the wire going to the tweeter disconnected at point A,
or must I disconnect prior to the R52/5W/22R thingy, point B?
Disconnecting at point B is less desirable because the thingy is located in with the electronics.