Pickup compatibility issue

[peterchui23]

I have a Yamaha BB414. There are 2 pickups, 1 P & 1 jazz (not sure but close to the bridge). There is a toggle switch for me to select P pickup, both or the bridge. I changed the P pickup to Duncan hot P pickup. Now, it sounds ok for selecting either the P or the bridge pickup, but sound strange for select both pickup.

Not sure what the issue is...?? How can I solve the problem ?

I am wondering whether I need to change the bridge pickup also but I don't find a pickup that is able to fit to the bridge one without mod on the body....

[PJSShearer]

When you say "strange" do you mean thin/quiet/no bottom?.

If yes, then you have wired the pickups "out of phase". Switch the hot and ground wires from either pickup and that should cure it.

[peterchui23]

Thanks for your advice, Peter !! Yes, sound from both pickup becomes thin...no bottom...Will try to see if switch the hot & ground wire will help...

I just thought that the bridge pickup is ceramic one (according to Yamaha web), that is not compaitable with the Duncan Hot P pickup...any possibility on this ?

[sloasdaylight]

Originally Posted by peterchui23

Thanks for your advice, Peter !! Yes, sound from both pickup becomes thin...no bottom...Will try to see if switch the hot & ground wire will help...

I just thought that the bridge pickup is ceramic one (according to Yamaha web), that is not compaitable with the Duncan Hot P pickup...any possibility on this ?

Doubt it. Your pups are probably out of phase like he suggested.