So there I am setting up for a gig and after a quick sound check someone mentioned there was a hum somewhere. Most of the neon lights were off, then I noticed it was coming from my bass amp. So now I am thinking what the [email protected]$& is up with that! I check all my cables and still that hum! Than it hit me............DUH! BIG DUH! I am using my (new to me) '72 Fender Jazz. IT'S THE OLD 60 CYCLE HUM! Most of the basses I have been using were all active and for the past number years all I have been using is my active Sadowsky basses with hum-canceling pickups. I like to play with bridge pickup louder than the neck pickup, thus the hum. I completely forgot about that! Just one of those things you have to live with if you play a passive jazz. Needless to say, even with the hum it sounded great! Welcome back to the world of single coil passive basses!