It’s finished! More or less… Still need to fine tune some more (like action, relief, pickup height and such things). It’s okay, but it can be better I think and it’s needs some time to set anyway.
By the way, the hum is completely gone. It’s as quiet as could be. I drilled a hole from under the bridge into the cavity and grounded the bridge. I didn’t dare drilling through the bass at first and I thought I could get away with it.. but it turned out to be a very useful thing to do actually..
I tuned it up, set the action with the truss rod and adjusted the pickup height. Then I tried it with my guitar amp (don’t have a bass amp yet) and all the electronics work like a charm.
I don’t know how it really sounds, since I need a bass amp for that, but as far as I can hear it right now it sounds warm but clear (doesn’t get fuzzy). It doesn’t pop like a jazz bass but has a more acoustic tone. The flat fingerboard plays very, very well and the balance is just spot on!
Here’s one picture. I will find someone who’ll make some nice shots of it later on and record some sound samples soon!!