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I have wired my Edison 60 in PSE triode mode with EL34 valves. I understand that you can run this amplifier with 300B`s also, and I would like to try this option. The trouble is that I can`t read schematics and I know next to nothing about valve theories. The question is: do I have to take the time to learn all this to be able to read the schematic on Thorsten Loesch` website, or could somebody explain in simple terms which components I have to change on the PCB`s and the PSU (I have one input transformer). I take it I have to change sockets for the 300B`s too, and need to know how to wire them.
Any input on this will be appreciated.
Ps: Will this conversion make any change in the amount of hum/noise?
> I understand that you can run this amplifier with 300B`s also,
You can, but the conversion is considerably more involved than just to change a few components.
> The question is: do I have to take the time to learn all this
> to be able to read the schematic on Thorsten Loesch` website,
I would strongly recommend this, if only to be also able to read the schematic and work out what went wrong if anything does.
> or could somebody explain in simple terms which components I
> have to change on the PCB`s and the PSU (I have one input
One Transformer has not got enough power for the 300B option, sorry.
> Ps: Will this conversion make any change in the amount of hum/noise?
Depends, if you use AC Filaments the hum will be a little higher. With DC Filaments and due to the added choke filtering in the PSU the hum will be much less.
You are right of course, telling me to learn the theory so I can understand what I am doing. My intention is to get a better understanding of amplifier designs and valve theory. With kits you don`t need much of that. I understand that my Edison isn`t suitable for 300B`s, so I think I leave it for now and consentrate on my speaker kit (Hammer Dynamics) arriving (hopefully) any day now. I`m a bit conserned that the small amount of hum in the Edison wil be a problem with a 97db loudspeaker. It may be a better solution to try one of the 300B kits that is offered all over internet. Well, it`s Christmas soon.
Thank you for your answer.
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