i`m trying to build something super simple that i can tweak easily. would adding NFB help?
what would be a good start? i`m actually thinking of using 6080s in place of the el84 with a much smaller Z opt.
i`m trying to use uncommercialized output valves to keep cost down while still using NOS tubes. any recommendations?
what would be a good start? i`m actually thinking of using 6080s in place of the el84 with a much smaller Z opt.
i`m trying to use uncommercialized output valves to keep cost down while still using NOS tubes. any recommendations?
you got to build it with a constant current source at the tail of the differential long-tailed pair for optimum results. then it'll sound really wonderful.
if it doesn't work, or sounds as bad as some put it, then the guys on this page must be crazy.
\\http://www.diyparadise.com/ultracompact.html
donjuan
if it doesn't work, or sounds as bad as some put it, then the guys on this page must be crazy.
\\http://www.diyparadise.com/ultracompact.html
donjuan
Yes I agree,
I think to give this project a chance, also because I've in my junk box everything necessary (at least for one channel).
But I'm puzzled by the sentence "the output stage amplify its own distortion" (from tschrama).
I really don't understand how it may happen, but he refer to a previous thead so probably embedded in the forum there is the explanation I need . . .
Ciao!
Massimo
I think to give this project a chance, also because I've in my junk box everything necessary (at least for one channel).
But I'm puzzled by the sentence "the output stage amplify its own distortion" (from tschrama).
I really don't understand how it may happen, but he refer to a previous thead so probably embedded in the forum there is the explanation I need . . .
Ciao!
Massimo
Hacknet, although you might not believe me at first, the price of individual valves isn't the critical thing in keeping costs down. The best way of keeping costs down is to keep the HT voltage at 300V. However, you can save significant money by going for valves that don't have 6.3V heaters. The circuit you presented (and its variations) will only work in pure Class A, so you will probably only get 6W out of it. 829B is a useful valve, and they're cheap as chips.
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