Hey! I'm from Argentina and I can't get 4250 we are 2... But, hey! Wy don't try to put it on a stomp to use it with 9V regulated power supply and let the 071 on the work?Victor Nery wrote:I replaced the TL071 with a low consumption LF351 but... the hum is still there. All the ground connections are ok; includind the one that goes to the bridge. I‘m thinking of reversing the wires of the second cap and the pole of the magnet. How can I do it? Is it really necessary or just turning it 180 degrees will solve the problem? I tried connecting the pickups straight to the output jack letting the circuit out of chain so now I‘m pretty sure the annoying hum comes from the pickups. Not sure about this but is it a question for another topic or it can be discussed here? I just can‘t find the LM4250 here in Brazil but as I told you the problem is the pickups. It‘s driving me crazy. Thanks
Just a detail: I've used UA741CN, and it's great with my fernandez gravity!
Anyway, I think the problem is in the bass part, if you can try with another bass, coud be great for solve your doubts...
Best regards!!!