Hello,
I am currently restoring a model 28 Bosch,I can't find any info on the impedance of the speaker transformer, unfortunately in Australia there is not much info available,I'm working of the circuit as shown in the resources section.
Thanking you
Dave.

:Hello,
:I am currently restoring a model 28 Bosch,I can't find any info on the impedance of the speaker transformer, unfortunately in Australia there is not much info available,I'm working of the circuit as shown in the resources section.
:Thanking you
:Dave.
:
Dave,
There's a chart showing approx. plate load resistance for the output tubes on this page:
http://www.radioremembered.org/outimp.htm
Carl T

::Hello,
::I am currently restoring a model 28 Bosch,I can't find any info on the impedance of the speaker transformer, unfortunately in Australia there is not much info available,I'm working of the circuit as shown in the resources section.
::Thanking you
::Dave.
::
:Dave,
:There's a chart showing approx. plate load resistance for the output tubes on this page:
:http://www.radioremembered.org/outimp.htm
:Carl T
:
Thanks for info Carl, RegardsDave J.