08-07-2016, 08:02 PM
This is the speaker that I have.
The field coil is 693 ohms and the output transformer primary is 272 ohms.
This is for a 6F6G.
My radio has a 42 which I believe is equivalent to a 6F6.
According to the 610 schematic I should use an 1100 ohm field coil with a 500 ohm output transformer primary.
How much difference would it make to use the speaker that I have instead? Should I put a 500 ohm choke in series with the field coil?