HELP Aguilar OBP2 not ground, I think.
I installed and OBP2 and a bartolini pup in my gary willis bass, and I do love it when it's flat.
the thing I hate about it is, that as soon as I add a little touch of treble, it starts buzzing like if it was not grounded, very noticeable, and the more treble I add, the louder the buzz/hum gets.
so I been thinking about replacing the preamp.
yesterday I was playing with the preamp flat as usual to avoid the noise, and I noticed that every time I touched the bass / treble staked knob, I was able to pick up a radio station.
so it made me think that it is worth keeping the aguilar cause it could be that the guy that installed the preamp did not do a good job.
I'm not great at electronics but if someone could explain me what to do, I could provide pictures if necessary.
Last edited by bassike : 06-25-2013 at 08:00 AM.