Hello every body!
I have a few questions about this pcb :
First, what about the tone stack components values? The resistor has been divided by 10 and the capacitor multiplicated by 10. So the frequency does not change, but why changing? Less load in the TS? However it is behind a cathode follower...
Then about the source resistors : it is the Soldano SLO schematic (or mesa rectifier) that has been cloned, it's not a scoop. The same component values, except for the 39k resistor that has been changed to 3.9k. Would it be ok to put a 39k?
And last, is the gain of a JFET really 1/2 (Rdrain/Rsource)? If true, it's much less than for a 12ax7 preamp tube, so why keeping th same attenuation beween stages?
Thanks
I have a few questions about this pcb :
First, what about the tone stack components values? The resistor has been divided by 10 and the capacitor multiplicated by 10. So the frequency does not change, but why changing? Less load in the TS? However it is behind a cathode follower...
Then about the source resistors : it is the Soldano SLO schematic (or mesa rectifier) that has been cloned, it's not a scoop. The same component values, except for the 39k resistor that has been changed to 3.9k. Would it be ok to put a 39k?
And last, is the gain of a JFET really 1/2 (Rdrain/Rsource)? If true, it's much less than for a 12ax7 preamp tube, so why keeping th same attenuation beween stages?
Thanks
