I have a couple of 813 tubes, laying there just looking good...I also have a powersupply which will give me around 500V. I have lots of parts and other tubes. What I dont have is lots of money to buy new stuff such as power tranny with higher output voltage.
So I plan to use those bad looking toobs in a SE geetar amp with what I got. If I run the 813 with 0V bias, I can get just under 200mA idle. It can maybe swing +-400V and +-150mA, which is 60Wpeak. That's a lot for geetar sound!
I figure driving it transformer coupled with a smaller power tube, such as 6L6, or parallel smallsignal triodes like 5687 or equivalent.
Any comments on this venture? I know I'll have a lot of wasted heat, which I don't worry about, but perhaps I've missed something and will spend a lot of time for nothing. My main concern being running 813s at this low voltage.
So I plan to use those bad looking toobs in a SE geetar amp with what I got. If I run the 813 with 0V bias, I can get just under 200mA idle. It can maybe swing +-400V and +-150mA, which is 60Wpeak. That's a lot for geetar sound!
I figure driving it transformer coupled with a smaller power tube, such as 6L6, or parallel smallsignal triodes like 5687 or equivalent.
Any comments on this venture? I know I'll have a lot of wasted heat, which I don't worry about, but perhaps I've missed something and will spend a lot of time for nothing. My main concern being running 813s at this low voltage.