Odd schematics - Jansen tube amps from NZ

[tubeswell]

Local manufacturer, Beverley Bruce and Goldie, did this with their  'Jansen' brand 'copies' of Fender amps in the 1960s. In the heyday of good old trade protectionism, when you couldn't buy Fender tube amps in NZ, local people started making their own versions.


'Blackface' (hehe)



'Silverface' (hehe)



Note that some of the stuff he says about Fender's amps typology in that blog I linked to above, is just plain wrong, but that main message is that Jansen 'Bassman' amps used a 12AU7 post PI gain stage on each side of the inverter (which often was also a 12AU7) to increase the drive to the output tubes.





They also used a separate PT winding for the screen supply (as he says in that blog article)

[DummyLoad]

cool stuff. thanks for sharing.


--pete

[EL34]

Got em
Just happened to pop in


PM me when you guys have schematics to add to the library
I get busy and may not see your post

[tubeswell]

Here's the schematics for the power supplies of their '60s tube amps. (Sorry its clipped at the top but its the only one I could find)