Here is a small supersymmetry(???)-circlotron preamp circuit i have been exprimenting with. Its easy to scale up to a poweramp.
The outputs are where minus attaches at the IRF9510 drains. No capacitors are needed
The outputs are where minus attaches at the IRF9510 drains. No capacitors are needed
An externally hosted image should be here but it was not working when we last tested it.
Thanks!!!
I have a little 2 x 15 watt permutation of this amp att home that I have been listening to for about half a year or so, it sounds wonderfull.
And Thank you Mr Pass for the "X" typ of circuits! Its a brilliant invention!
In an poweramp with this topology you dont have to use batteries on the inputs.
I use batteries to be able to use higher values in the feedback, but still have the amp DC coupled. But a power amp can easely drive 47 ohm feedback resistors, and that is what the 2SK170 like on their sourcepins to give 3-5 mA current.
I use batteries to be able to use higher values in the feedback, but still have the amp DC coupled. But a power amp can easely drive 47 ohm feedback resistors, and that is what the 2SK170 like on their sourcepins to give 3-5 mA current.
An externally hosted image should be here but it was not working when we last tested it.
Its a ½ year old design and I built it before I started to implement X into my circuits. I have tried X feedback but I dont want to rebuil it and I dont want alligatorclips all over my amp. So I ripped it out. It sounded very nice though.
An externally hosted image should be here but it was not working when we last tested it.
This would be a "verical" arrangement of that amp.
I sketched down this idea a couple of years ago, but I have never tried it.
I should work.
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