i wanted to upgrade my old toby 5 string. the only pickups i could use were j style where the neck is slightly smaller than the bridge one. there was no room to open the routing of the pickups as i wanted to install MM style but the control cavity is huge and was on the edge of the original j pickup routing. So i replaced with active J pickups and preamp. It sounds alot better the low B string is nolonger muddy. I am very happy but the reason i wanted to upgrade was to equal the output of my other bass. It didn't! I have to turn up the amp when switching basses cause the Toby dosn't have the output of the Bongo. So would you agree with this statement......J bass pickups can never equal the out put of MM pickups, and i will always have to adjust volume when switching from my 4 to 5 string basses. I have to increase the volume on the amp 3 clicks to equal the volume level. Thanks guys any advice will be appriciated
