So if I were to use the gain control between the source pins of the 610 Mosfets like the original Aleph p 1.7 then just what exactly would be the lowest resistor wattage needed?
I am planning on putting 20 100 ohm resistors in series for 20 gain settings with relays and a multi-position make before break switch to control them in place of the original potentiometer. I can see that there is not a significent dc difference however I am not sure about what the AC is at here.
I was looking at 1/10 watt dales, will these be enough to handle the power at this location?
Ive got it!
How about I just use one of the original volume controls of the aleph P 1.7 for the 2k gain control! I would just have to take off the first two 8k and 4k resistors and replace them - on the other end - with 30.9 ohms and 15.48 ohms!
I think that this would work.
Then the only problem would be in making them make-before-break to avoid noise pops. I think that would be the ultimate though, 256 steps of precise gain adjustment.