Happy New Year guys!
I made a tube mic in a Behringer B2 body with this tube using attached schematic.
Difference is i have B+ 120vdc.
I noticed i was getting about 40vdc at plate, so i changed plate resistor to 50k and got about 75vdc. 2vdc grid bias. Is that ok? Did i mess something up? The mic sounds awesome, low distortion, low noise. Only thing i don't like is it's too clean(i used 1Gohm resistors), almost no difference from my FET b2. But that is another subject.
I am not sure as usualy there is 100k plate resistor value in most tube mic schematics. Is it ok to use 50k?
I made a tube mic in a Behringer B2 body with this tube using attached schematic.
Difference is i have B+ 120vdc.
I noticed i was getting about 40vdc at plate, so i changed plate resistor to 50k and got about 75vdc. 2vdc grid bias. Is that ok? Did i mess something up? The mic sounds awesome, low distortion, low noise. Only thing i don't like is it's too clean(i used 1Gohm resistors), almost no difference from my FET b2. But that is another subject.
I am not sure as usualy there is 100k plate resistor value in most tube mic schematics. Is it ok to use 50k?