I built up a 3 band bass preamp following the EBMM stringray schematic:
The problem is when i have the volume set to max i have slightly less than unity output. I get it that you won't notice this if it's wired in a bass and you can't turn it off, but since this is in a pedal, the volume drop is noticeable.
I'm trying to figure out how to coax some more gain from the opamps, but i;m not seeing a feedback resistor to change on the IC on the left and i'm not really sure what i would do with the IC on the right.
I've already tried dropping the 130k resistor on pin 2 down to about 47 but it didn't really do much. Now i'm thinking about the 10k/560k on pin 3? if i drop the 560k down will that increase the voltage that comes onto the signal in pin 3 and make it louder?