I've wanted build an octal front 6L6 SE for a harp amp for a while now.
I found an interesting schematic and the modified it to fit my needs.
Fist off I'm using a 6BG6G coke bottle instead of a 6l6 and the pin out is a bit different
second, having just built a 5F2A and toying with the NFB I changed the resitor to a pot ganged to a switch that when turned all the way ccw opens the switch completly cutting the NFB. the 10 meg is to eliminate POPPING when the switch is thrown
third I added a tweed style tone control where the original schematic had a volume only
fourth would a bright circuit with a switch be of any benefit to a Harp amp?
OH! I also added a line out using weber's BALUN xformer. I used it on the 5F2a with HUGE sucsess
I've only done some rudimentary math in the PS section and the dropping resistors may not be correct
It is my intention to build this as a head. If I were to build an extention cab to go along with it, what size speakers would I want to considder?
I really like Webers signature series for thier price and performance.
any comments or concerns would be apreciated
Ray
I found an interesting schematic and the modified it to fit my needs.
Fist off I'm using a 6BG6G coke bottle instead of a 6l6 and the pin out is a bit different
second, having just built a 5F2A and toying with the NFB I changed the resitor to a pot ganged to a switch that when turned all the way ccw opens the switch completly cutting the NFB. the 10 meg is to eliminate POPPING when the switch is thrown
third I added a tweed style tone control where the original schematic had a volume only
fourth would a bright circuit with a switch be of any benefit to a Harp amp?
OH! I also added a line out using weber's BALUN xformer. I used it on the 5F2a with HUGE sucsess
I've only done some rudimentary math in the PS section and the dropping resistors may not be correct
It is my intention to build this as a head. If I were to build an extention cab to go along with it, what size speakers would I want to considder?
I really like Webers signature series for thier price and performance.
any comments or concerns would be apreciated
Ray
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