So as a follow up to the 6N3/6N6 line/HP amp I created, I finally built a version using a WCF as output instead of the simple active load.
The results are nice.
Pout is 180mW from 32R to 470R.
2.4V volts out with 32R load, 9V out with 470R.
I have four boards available at the moment. 5$ each + post because I left off the 1000uF caps - just solder them across the resistor leads.
Here's the schematic. Copyleft as usual. Same dimensions as the old board.
The schematic says 6N3 because I was originally going to use them - the board is 9AJ.
The results are nice.
Pout is 180mW from 32R to 470R.
2.4V volts out with 32R load, 9V out with 470R.
I have four boards available at the moment. 5$ each + post because I left off the 1000uF caps - just solder them across the resistor leads.
Here's the schematic. Copyleft as usual. Same dimensions as the old board.
The schematic says 6N3 because I was originally going to use them - the board is 9AJ.
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So when I was adding a voltage divider for the line out, I noticed I installed C2 backwards when I built it!
I saw bulging leaky 16V caps and immediately said out loud "Idiot! They're reversed!"
I also added XFMR out to break loops if required (although these days I prefer using AD/DA with optical).
I saw bulging leaky 16V caps and immediately said out loud "Idiot! They're reversed!"
I also added XFMR out to break loops if required (although these days I prefer using AD/DA with optical).