Hi All, this is a follow to the thread done in October 2013. See original here https://www.avforums.co.za/index.php/topic,28051.0.html
So what more can be said about the design? If you have some patience, then let's look at some circuit ideas.
Geco's suggestion in the original thread is more or less where we are now:
I have been wondering about the wisdom of putting the volume right in front of the circuit. It has the advantage of only one capacitor in the signal path, but the volume pot could be seen as a difficult load to drive.
Another way of doing things would be to place the volume pot after the first triode, followed by the cathode follower. The first triode could arguably be a better driver for the volume pot, and the cathode follower gives a low output impedance. Something like this:
This way the output of the source drives a triode directly, and the volume pot is buffered from source and amplifier. Could this work?
So what more can be said about the design? If you have some patience, then let's look at some circuit ideas.
Geco's suggestion in the original thread is more or less where we are now:
I have been wondering about the wisdom of putting the volume right in front of the circuit. It has the advantage of only one capacitor in the signal path, but the volume pot could be seen as a difficult load to drive.
Another way of doing things would be to place the volume pot after the first triode, followed by the cathode follower. The first triode could arguably be a better driver for the volume pot, and the cathode follower gives a low output impedance. Something like this:
This way the output of the source drives a triode directly, and the volume pot is buffered from source and amplifier. Could this work?
