I've been wanting to install a neck pickup on my Gibson LP JR DC since I bought it, mainly to use as a woofer pickup in a dual-amp setup. I even had the very same idea of a crossover-as-pickup-selector that was mentioned in this older thread:
Built in crossover for neck and bridge pickups
With 2 pickups, it would require a HPF and LPF in tandem. Most of the onboard options available have 6 or 12db/octave slope, and then you'd have the task of wiring them to a dual-gang pot and somehow ensuring that their cutoff points are aligned. Long story short, I haven't bothered trying to rig up an onboard crossover yet. In fact, I haven't even installed a neck pickup - routing this bass for a neck pickup (especially a large mudbucker) might actually be a really bad idea, since you'd be cutting into the neck joint. It has Gibson's newer Thunderbird-shaped, MM-style humbucker in the sweet spot, with the factory installed push-pull for their "tuned coil-tap" (which I believe is just the G&L capacitor trick). Both modes sound great, with the full humbucker mode very mid-focused, and the other much more P-bass-esque. Another option I've looked at is the Lace Ultra-Slim Bass Sensor, which mounts with tape - but I haven't bothered with that yet, either! Instead I picked up a Rane AC22 rackmount stereo crossover, which has 24db/octave slopes and even a 3-way mode. In stereo mode, I can adjust the HPF and LPF separately, to overlap or notch, so it's probably the best way to experiment with this kind of setup. However, with the lows cutoff at 200Hz, you can't even hear the difference between the humbucking and split-coil modes - to the point where I'd be very surprised if having a neck pickup would even make a difference. It is all deeeep bass, and combined with some dirt and/or delay on the highs, it all sounds amazing.
So I'm wondering if anyone has experimented with neck pickups and LPFs, etc, and what you've found. And...go!
Built in crossover for neck and bridge pickups
With 2 pickups, it would require a HPF and LPF in tandem. Most of the onboard options available have 6 or 12db/octave slope, and then you'd have the task of wiring them to a dual-gang pot and somehow ensuring that their cutoff points are aligned. Long story short, I haven't bothered trying to rig up an onboard crossover yet. In fact, I haven't even installed a neck pickup - routing this bass for a neck pickup (especially a large mudbucker) might actually be a really bad idea, since you'd be cutting into the neck joint. It has Gibson's newer Thunderbird-shaped, MM-style humbucker in the sweet spot, with the factory installed push-pull for their "tuned coil-tap" (which I believe is just the G&L capacitor trick). Both modes sound great, with the full humbucker mode very mid-focused, and the other much more P-bass-esque. Another option I've looked at is the Lace Ultra-Slim Bass Sensor, which mounts with tape - but I haven't bothered with that yet, either! Instead I picked up a Rane AC22 rackmount stereo crossover, which has 24db/octave slopes and even a 3-way mode. In stereo mode, I can adjust the HPF and LPF separately, to overlap or notch, so it's probably the best way to experiment with this kind of setup. However, with the lows cutoff at 200Hz, you can't even hear the difference between the humbucking and split-coil modes - to the point where I'd be very surprised if having a neck pickup would even make a difference. It is all deeeep bass, and combined with some dirt and/or delay on the highs, it all sounds amazing.
So I'm wondering if anyone has experimented with neck pickups and LPFs, etc, and what you've found. And...go!