Silver Jubilee 2555 bias issue
Posted: Thu Nov 19, 2015 6:16 pm
I pulled a properly biased set of Groove Tube GT34LS's and replaced with a quad of JJ EL34's.
The highest I can get the bias is now 18ma's. I have looked at the 2555 schematic and I am still not sure which resistor is the bias range one. I thought it might be R23 but my amp doesn't have anything there.
This is an original Jubilee if that matters.
Any ideas?
Thanks
The highest I can get the bias is now 18ma's. I have looked at the 2555 schematic and I am still not sure which resistor is the bias range one. I thought it might be R23 but my amp doesn't have anything there.
This is an original Jubilee if that matters.
Any ideas?
Thanks