Volume drop if bridge pickup is on full

[ack1961]

Hey all...I posted this question earlier today in the Pickup/Electronics forum on TB, but no one could (ow would) answer it.
Is anyone here able to tell me if this is something to be concerned about?
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I've got an '86 Peavey Foundation with 2 Super Ferrite pickups (passive) in it, and I noticed something that I've never noticed before:

If I have the Neck pickup on full, and I start to roll on the Bridge volume, everything is fine (volume steadily increases) up to about 9 or so. After that, there is volume loss up to the point where both pickups are on full.  Not a huge drop, just significant enough to notice.

It's really not that big of a deal, but I'm curious to know if I've got a bigger issue, or perhaps this is not that uncommon.

Thanks,
Steve

[Freuds_Cat]

I could attempt a poor explanation of this phenomenon but I think I will just wait for Anthony to do the job properly  I'm pretty sure this has been discussed here before.

[exiledarchangel]

Does the same thing happens when the bridge is full and you add the neck pickup? This is normal for passive pickups, especially for those equipped with high output humbuckers. When the two pups are on full, some mid frequency cancellation happens, that is why you hear the drop in output, and the sound is more "hollow".

[ack1961]

Does the same thing happens when the bridge is full and you add the neck pickup? This is normal for passive pickups, especially for those equipped with high output humbuckers. When the two pups are on full, some mid frequency cancellation happens, that is why you hear the drop in output, and the sound is more "hollow".

I don't notice a drop off starting with the bridge pickup on full and rolling on the neck.
And it's definitely a drop in mids - I hadn't noticed it until I read your response and had a better listen.

As long as it's a "normal" phenomenon, it's all good.

Thanks a bunch,
Steve

[jumbodbassman]

pretty normal.  you can try dropping the neck pup height  to even out the volume and lessen this effect

[exiledarchangel]

Thats what I would suggest too, pickup height adjust can fix a part of that effect.

[uwe]

A lot if not most two pup basses have that. Some excessively, anybody remember the MM Sabre?!!! A Jazz is pretty good at cancelling out too.

[Pilgrim]

A lot if not most two pup basses have that. Some excessively, anybody remember the MM Sabre?!!! A Jazz is pretty good at cancelling out too.

It's not a bug, it's a feature.

[Psycho Bass Guy]

It's not a bug, it's a feature.

Hey now! Some of us LIKE the drop in mids. Single pickup basses make things too complicated! 

[jumbodbassman]

+1

[Pilgrim]

Hey now! Some of us LIKE the drop in mids. Single pickup basses make things too complicated! 

SSShhhhhhh...my Casady, Gretsch 2202, P and Bronco have hurt feelings now.