09/12/2025
Danny Higgins Lakland 5 string bass, Aguilar OBP3 preamp re-install.
This came in with no output. Delving inside there were broken connections and dry solder joints. Wires ran to the wrong pots and it was just generally a little all over the place. The easiest solution was to strip it out and, clean all the lugs of solder and renew all the connections.
The wiring diagram is actually wrong for this, I found out once I'd wired it in accordingly, but that wasn't too difficult to overcome and rectify thankfully.
Now it works correctly volume, blend, bass boost/cut, mid boost/cut with switchable frequency and treble boost/cut.