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thirdstone · Joined: 11 Apr 2005 Posts: 9

I need some help looking for a schematic for an Australian amp from the 60's called a Diason Baby. Its around 5watts , has one 12ax7 and two 6GW8 valves. It also has a tremolo circuit but mine has been either removed or converted.Thanks for viewing.

jvb · Joined: 14 Nov 2005 Posts: 6 Location: Canberra, Australia

I think there were a few amps with a circuit like that. There was a Marshall 1930 (http://www.thetubestore.com/inonmaram.html#Popular%20model%201930). I had a Maton amp like that as well, but I don't have a schematic.

thirdstone · Joined: 11 Apr 2005 Posts: 9

Thanks for the info. It does sound similar. The Marshall was made in the early 70's and the Diason is from the 50,s so it can't be a clone.The schematics for the 1930 might give me some clues when I back engineer the schematics for the Diason. My amp has had the tremolo cct removed so I might be able to copy the marshall tremolo. Thanks..kev

thirdstone · Joined: 11 Apr 2005 Posts: 9

More info on the diason is that it is 10W and made around 1955 in very small numbers. Production was from Melbourne Australia

jvb · Joined: 14 Nov 2005 Posts: 6 Location: Canberra, Australia

BTW here is the Marshall schematic:

http://www.drtube.com/schematics/marshall/1930.gif