I built a dual pickup buffer a while back, and through the process learned about using "mix" or "summing" resistors on a pickup's hot lead to keep two pickups from loading each other down in a way that made the blend function more like a 3-way switch. I've managed to get this working just fine in one bass. I recently put 47k resistors in line with two EMG 45TW pickups and a 250k MN blend pot to tame the blend curve, which has worked well. The pickups reportedly have a 10k impedance output (these are the older, non-X type. The X type have a 2k output). I have kept the blend pot ungrounded, which also helps to keep the blend more gradual and doesn't provide a ground at this stage that can bleed off high frequencies. The blend pot feeds into a 250k audio taper master volume pot. The volume feeds the input of an Aguilar OBP-3 preamp. As far as I'm aware, putting resistors in series between your pickups and blend pot like this should only cause a reduction in volume, which was fine because this bass is still far hotter than the rest of mine, even after the mod. But would there be any effect on frequency, connected this way? Have I lost some high end? I didn't think I did, but the bass is new to me and I may not have noticed a subtle change. Electronically speaking, have I done anything to attenuate a certain band of frequencies as opposed to just attenuating the overall output level of each pickup? Thanks for the help!