Interesting little find for those of you with 2015 birds or other basses with similar pups or basses with Babicz bridges.
I know I tried them before, but on a lark I decided to restring my 2015 with EBCF strings since I had taken the SITs off if to donate to the 22NR. Before I put the strings on the 2015 I hammered the pups as low as they’d go. Installed the EBCFs, tuned it up, and set the action super low, adjusted the intonation, set the witness points at the nut and bridge (don’t think I did that on the 2015 before) and made a couple of minor fine tuning tweaks to the truss and bridge. At first blush she sounds wonderful, much much better than she ever has. We’ll see if it holds over time.
I don’t really know for sure what’s different, because I’m pretty sure I dropped the pup height with every string I’ve tried on this bass (except the SITs). I do know setting witness points at each string end is important for optimal performance, and I admit to not doing that for whatever reason on this bass in the past. All I can figure is the combination of a very low break angle at the bridge and lack of witness points on the strings was possibly contributing to a minor shifting of intonation with string ocilitation resulting in a slight chorus or out of tune effect.
So all this time I’ve been focusing on the pickups (and their monstrous magnetic pull) to correct the chorus effect but in theory it may have been the minimal bridge saddle break angle and lack of witness points allowing the string to move just enough to throw a ghost tone in the mix.
For those of you with Babicz bridges (especially if they have very minimal break angle on the strings) do yourself a favor and tune everything to where you want it, then intonate AND set witness points at the nut and bridge. Always a good practice but for some reason I repeatedly forgot that last step on this bass.