Do the Bisonic adjustment screws exert an influence over the strings, or only the pole pieces?

[lungimsam]

I know the pole pieces do. Just wondering, as the adjusters screw heads sit a little closer to the strings than the pole pieces since there is a tilt to the mounting rings on a Starfire.

So, for instance, if my pole pieces measure 4/32 from strings but the adjustment screw heads are 3.5/32 from strings...is the 4/32 from pole piece measurement not telling me the whole story?

Only reason I ask is that all my Bisonics are very loud sounding to the point I have removed the pickup rings to get them further from the strings before. But just notice (after all these years) perhaps the adjustment screw heads play a role in the magnetic field somehow. They sit a little closer to the strings than the pole pieces.

 

[fronobulax]

Took me a while to figure out what you meant by "paddle screws". They adjust the height of the pole pieces and "paddle" doesn't suggest that to me.

If I knew what I was talking about I'd be designing pickups. But simplistically the string is interacting with a magnetic field. So the answer to your question is Yes if the paddle screws have any effect on the magnetic fields. If you have one coil and two magnets I can imagine the paddle screws play a part. But the simplified physics I am comfortable with would say No if there is one coil and one magnet.

If I wanted to know with some certainty I would remove the screws and try and fix the pole pieces in place with tape or maybe just replace them with a non-magnetic screw.

Bisonics by their nature tend to be hot and/or loud. The usual solution is the volume control. If that causes an unacceptable change in tone then the circuitry is modified or attenuation is added in the signal chain after the bass.

 

[lungimsam]

Thanks for the info!
Changed verbiage to “adjustment” screws.

 

[fronobulax]

Thanks for the info!
Changed verbiage to “adjustment” screws.

Well I did figure it out

 

[teleharmonium]

No, the screws are not used as polepieces, they only mecanically adjust the magnet heights, like a DeArmond Dynasonic.

 

[fronobulax]

No, the screws are not used as polepieces, they only mecanically adjust the magnet heights, like a DeArmond Dynasonic.

I know that is the design, but I was speaking to a possible reality. Magnetic fields can be shaped by or interfered with by magnetic materials. So without knowing or measuring distances and strengths there could be interference. But even if that interference exists is it strong enough to be observed when measuring string motion or the signal leaving the instrument? Probably not.

I think we are in the realm of possible vs. probable and where not probable becomes not possible in practice.