RetiredUnit1
Well-known member
Rob Robinette has 750 pages of how-to's on amps, everything from how to read a schematic to how to build an amp. Somewhere in those pages he goes through the math to show the juice needed for adding/subtracting tubes. I did not bookmark the page, it's in there somewhere.I did not. I literally just pooped the princeton pre section into my schematic. And that's from Mike Freda's 1 watt princeton schematic. I thought about the math, but never did it. Not even sure how I could begin. I did the Uncle Doug windings count!
I also had the thought last night of just rewiring the V3 octal for a 6sc7, 6sj7 or a 6sl7. All are duo triode instead of the single triode that's in that position now. It should be enough gain to go from line to instrument level.
Every time I go to his site my mind fills with so much information that I have to stop reading so I can soak in what I just read..... All the mods I got for the Bassman are from his mods, but I did radically change the layout to make it more straightforward...
I'm a computer programmer by trade, retired, with no formal education in electronics. I learned how to read schematics on Rob's site MANY moons ago! I built my first amp back in the early 00's, tho I'm not sure of the date.....